AnotherDave

Why does the consensus seem to be that it is harder to grade S-LOG?  Because it's 8-bit, 4:2:0?  Are people confusing color grading with color correcting?
It isn't raw.  You have to set the white balance correctly for every lighting change.  That is as easy as holding up a grey card or using an expo disk and shooting a custom white balance. Done.
I find it is much more difficult to do a final color correction on Red footage because no body ever shoots a grey card.  I might have a bit more room to tweak colors, but I HAVE to do a job that someone COULD have done in the field.
I haven't noticed any banding.

I've had the a7sII since launch (bought it from BH), and I'm not getting the sunspot issue you're getting.  I've tried pretty hard to re-create it... and nothing.  Just white, bright, light...
I'm also not having an issue with heat, either.  I've used it on 4 pretty long (12-15hr) shoot days, and never have I had it overheat.  *I should note, I wasn't recording continuously.  Each take was between 20 seconds - 2 minutes max.  But the camera was running mostly all day, recording 4k, powered through v-mount, running video to a SmallHD 502 and a Paralinx Triton and I never had any heat issues. 
I do agree that the Gamma Assist LUT should be adjustable.  It mainly hangs in the dead center for me.  I never had an issue under-exposing, but I was mainly checking exposure through the 502 and using a quick, LUT I built in Resolve.
As far as adapters go, I recently learned to love E-mount lenses after picking up a used 35mm Sonnar, and I'm a bit blown away by the auto-focusing and face tracking modes.  I've set Focus Hold to C1 and I like it enough to double down and sell my 24-105 Art for a Sony 24-70 Vario-Tessar.  It isn't as sharp, but offers better contrast and is also nearly 1 1/2 lbs lighter.

Hang on a second.
I just realized you're comparing them using a Canon 24-70 f2.8 (presumably the mk2) on the C300mk2 to a Sony FE 24-240 f/3.5-6.3???  That doesn't seem like a fair competition at all.
The auto-focus and the colors would be greatly effected by the differences in the glass for sure. 

Why does the consensus seem to be that it is harder to grade S-LOG?  Because it's 8-bit, 4:2:0?  Are people confusing color grading with color correcting?
It isn't raw.  You have to set the white balance correctly for every lighting change.  That is as easy as holding up a grey card or using an expo disk and shooting a custom white balance. Done.
I find it is much more difficult to do a final color correction on Red footage because no body ever shoots a grey card.  I might have a bit more room to tweak colors, but I HAVE to do a job that someone COULD have done in the field.
I haven't noticed any banding.

Why does the consensus seem to be that it is harder to grade S-LOG?  Because it's 8-bit, 4:2:0?  Are people confusing color grading with color correcting?
It isn't raw.  You have to set the white balance correctly for every lighting change.  That is as easy as holding up a grey card or using an expo disk and shooting a custom white balance. Done.
I find it is much more difficult to do a final color correction on Red footage because no body ever shoots a grey card.  I might have a bit more room to tweak colors, but I HAVE to do a job that someone COULD have done in the field.
I haven't noticed any banding.

Vincent isn't a filmmaker anymore... He is a salesman. Philip Bloom is too.

This hack keeps this camera viable until people actually NEED 4k in the home.... Which is at least 5-15 years away.

With every new camera, there is a new gadget... Something for Vincent and Philip to 'review' and endorse so you will buy it.

Are they paid for it, no (maybe)... But they certainly profit from it - not just but clicks on ads on their sites... but as long
As they can stay relevant they can keep working.

I like them, and honestly think Philip is pretty cool... But I wouldn't take their opinions about a camera hack and the future
of anything as fact. They are salesmen for a booming industry!

Same experience conversing with Phil myself. A lot of nasty tantrums over email and threatening behaviour. He needs to handle criticism far better than he is doing.
 
Really the issue is not that he doesn't need raw, or finds it impractical, or wants to constantly point that out.
 
The issue is that he is in a position to help us and help Magic Lantern, and all he can do is moan and post pictures of himself.

I didn't say I don't respect him.  But, he is a salesman - plain and simple.
 
Honestly, it's a touch disrespectful that you would assume I was being disrespectful.  
 
My hypothesis - Vincent Laforet and Philip Bloom are salesmen.  Prove me wrong?
 
This is Vincent Laforet's IMDB page.
http://www.imdb.com/name/nm3667064/?ref_=fn_al_nm_1
 
&
 
This is Philip Bloom's imdb page
http://www.imdb.com/name/nm2423275/?ref_=fn_al_nm_1
 
As I said, I genuinely like Philip Bloom as a personality.  
 
But (mostly) everything they're listed as doing coincides with the release of a new camera or gadget.
 
They aren't filmmakers, they're bloggers and salesman.
 
Stanley Kubrick would have jumped all over a full-frame RAW digital camera that could shoot 12,800 ISO with his 0.96 lens for $3k.
 
These guys are here, as pawns, for a BOOMING industry of camera technology.  *my opinion.  (and again, Philip is cool)
 
A hacked camera that is 1 year old (especially one that they both took a blogger's dump on) isn't profiting them in any way.

Somebody has to explain to me WHY anyone would care what Laforet thinks. WHY? He was at the right place at the right time five years ago and made a couple of low light tests, which he called "films" (hello a "film" has to have a story, a plot), Canon rewarded him by letting himd direct one of the C300 promotion films and.... and that's it. All he's done since then is to heavily promote the most expensive equipment and vendors in this industry, who, btw, sponsor his site. And like someone else said, why would anyone be surprised by the fact that he said "we should be focusing on the C series..." You're asking Canon's public relations guy to tell you what the best choice is ... come on! I'm a Canon user myself, but I need to find the best tool for the buck and all Canon has done since they accidentally started the DSLR revolution is to try to push everyone upmarket by rationing technology.