Thatguy

I agree with @KnightsFan about the practicalities of the different pieces of equipment, but I'm wondering what aesthetic you're interested in creating?
Gimbals eliminate all shake to the point of creating the feel of a disconnected flying perspective.  This might be right if you're trying to make something look beautiful, but if you're interested in a POV where it's about the difficulty of the climb and you can hear the climber breathing heavily, boots crunching over rocks, maybe loose rocks falling over the edge, etc, then a gimbal would be a terrible choice and you'd want something that showed the movement of each step, and each little slip.
Start with the desired aesthetic and work backwards, only then compromise on practical grounds if you have to.  

I think a motorized gimbal will give the best results with the least amount of attention paid to the rig, which seems to be the critical element here. Benefits to a motorized gimbal: Significantly easier to keep level, which will be HUGE if you are walking on rough terrain or climbing over things. It will be significantly easier and faster to balance, which is crucial if you are in a hurry.
The glidecam is not a bad option at all, and would be my pick if you can be sure of your footing. A few benefits to the glidecam: no batteries, no firmware, very weather resistant. It's significantly easier to pan and tilt naturally with a glidecam, you just touch it and it moves. Much more intuitive and tactile than twiddling with joysticks or touchscreen apps. You can also carry it easily when not shooting. A motorized gimbal will flop around if it is off, so you need a way to secure it when not in use.
If neither of those will work, I would go for a fig rig. It's essentially just two handles shoulder-width apart, and a top handle. I know people who have made their own out of old bike wheels. Using this will keep your horizon more level than just holding the camera. You can operate it one handed if you need to clamber up stuff. Again no batteries or firmware to worry about. A fig rig won't do MUCH stabilization, but it's better than nothing.
My last pick would be the shoulder rig. I can't imagine doing a strenuous hike with one of those on me. Maybe other people have better technique, but for me to get decent results I have to keep my back and neck pretty straight, which is impossible hiking up or down any sort of incline or when scrambling up and over things. And if you need to swing your arm out suddenly to maintain balance... goodbye camera.
Whatever you go with, I definitely recommend having a quick and secure way to put the rig away, and leave both hands free, just in case.

I am also in the same boat.  Looking at something more on the adventure side for the mountains.  So far every camera bag from a photography company just sucks imho.  Was looking at the trekker the other day and it took me 10 seconds to put it back on the shelf.  Why cant they figure out a decent harness system? So far I have narrowed my choice down companies that specialize in the outdoors.  Since they know that the harness and frame are the most important aspects for a decent backpack.  All day comfort, back can breath, weight evenly distributed.  Burton (zoom, Fstop)  and EVOC (35L) are on my shortlist.  Burton looks like better value, but I have an EVOC MTB backpack that has seen 5 years of total abuse in every weather and if I clean the grit off it looks like new and may last 10 more years.   But the price aint easy.  Last option is just a decent hiking bag (good harness, frame) with a camera bag inside.  But that wont be easy to pull out your gear.  I am going to have to be REALLY nice to the wife to get the EVOC.  But I believe in buying quality as you only have to buy it once. But the price aint easy. 
https://freehubmag.com/articles/evoc-cp-35l-camera-pack-review

They said 7th of Jan. one day before the CES show.  So they (panny guys) better start trying to find the casino exit ASAP.  But your right, could take days, even with a search and rescue team. 
Oh look, another black jack table.  

After spending far too many hours in their casinos as a younger man, I can attest that not providing a specific hour for the announcement other than "Las Vegas time" is entirely appropriate and could mean any time in the next few days  

100% agree.  The camera is a tool, the artist is the behind the camera.  I have been out shooting with my EOS 500D.  I plan on practicing my Mlogs and such on my other cameras until I get my act down then use something better for the final product which most people will watch on youtube in 480p ?.  That said, it just seems like the Pannasonic S1 looks like a FF GH6 regarding rumored specs.  So where will a MFT GH6 fit in??
All in all I dont really care about the camera body,  its the lens system thats most important to me.  My eye and the cameras eye are the most important parts of the equation.  I'm willing to spend two or three times more on the lens than the camera.  But I do love those wide angle shots of the mountains and a FF does that better.  But I have to hike there and a MFT does that better.  Its all about finding the best compromise.