SteveV4D

I am well aware no one will likely tell the difference between the GH5s and Pocket 4K.  I can vouch for that from my own clients feedback.  However that is not the point.  My work starts with my approval.  I want to be happy with my work and I am happier shooting with the Pocket, partly because I prefer Blackmagic colour science over the Panasonic.  In the same way some prefer the Canon image.  Each camera has a look and it's not always possible to entirely duplicate it with LUTs and colour grading.  I prefer the Blackmagic image.  I spent years and years finding a look I like with the Panasonic and even now there are moments, I am not happy with the image.  Not so with the Pocket.  Straight out, I found a look I am very happy with.  
There are other reasons I prefer the Pocket.  Punch in focus, menus, BRAW, SSD recording and choice of aspect ratios such as 2.40, you can shoot in.  Footage works so well with Resolve.  I love shooting with it.  

I own the GH5, GH5s and Pocket 4K.  Despite the limitations of the Pocket 4K, I shoot with it as my primary camera for various reasons
Colour Science is better... the image looks superior in the majority of shots.  Blackmagic colour science is better.  Sure there are some shots where it is hard to tell the difference, but equally I find many where the BM is the clear winner.
BRAW... for me less about pushing the image and more about speed of editing and the flexibility to change ISO and White balance in post.  Sure, I get it right most of the time, but the are moments, where I do not for various reasons and this is such a bonus.  I hate editing H264 files now after editing BRAW.
Better menus.  
Punch in focus during recording
Larger screen.  Even fixed, it's so much easier to shoot with.
Being able to shoot 75 fps in 2.40 aspect ratio or 60fps in 16.9 without loss of quality. On the GH5s you are stuck with 8 bit 60fps.  
Being able to record to an SSD.  That has helped a lot when editing at venues I am filming at for a rough cut.  Also on CFast cards, which feel solid to hold.  SD cards are so flimsy and I have had to retire a few for falling apart 
Application of LUTs is much better.  You can embed and have more to choose from.  
Mini XLR input.  
I should point out, I've been using Panasonic for 8 years and have been a huge supporter of their cameras.  The GH5 and GH5s still get used on nearly every jobs I am doing.  Usually as B cameras, though the GH5 steps in if filming in wet weather or where IBIS is needed.  They are great cameras, but I love the Pocket 4K more despite the limitations.  
 
 

I've shot over 50 Weddings with the Pocket 4K.  Never let me down.  It even got knocked to the floor twice, and kept on recording to the USB drive.  When a similar thing happened to my GH5, it shut down and the file was badly corrupted.  Best camera I've owned.  :). And to think I very nearly cancelled my pre-order last December....
 

I've shot over 50 Weddings with the Pocket 4K.  Never let me down.  It even got knocked to the floor twice, and kept on recording to the USB drive.  When a similar thing happened to my GH5, it shut down and the file was badly corrupted.  Best camera I've owned.  :). And to think I very nearly cancelled my pre-order last December....