Hey HugeRobot! I just finished going through the demo and I have a few comments on it. I'm using a Vive and am running a gtx 1080 and i6700. As far as climbing goes, I had the same problems as Balian. I could never make it past more than a few rungs and the collision on the blocks seems to be very strange. It feels like you may only be able to grab edges of objects or something, I can't quite tell. The physics seem to be a little wonky as well. Sometimes when I let go, I seem to start falling immediately at super fast speeds. As Balian said, Climbey feels great to play so I'd suggest spending some time with it and trying to capture the same feel. Climbing stuff may need a little more tweaking, but the main reason I checked this demo out was for the movement system.
First off, I'd like to say that running felt great. However, it was a little annoying having to hold the trackpad the whole time. I'd suggest changing the double click feature from a tap to activate into a straight up toggle. Basically, double tapping the pad will engage movement without the pad needing to be held. If that were the case, I feel like jogging around would have been a real treat. Otherwise, running felt natural and I picked it up extremely fast. Unfortunately, I can't say the same thing about slow movement.
It might need more time with it, but trying to walk slowly with precision was pretty much impossible. I found myself trying to take small steps and observed when doing that, my head made very little vertical movement. I tried bobbing my head, which worked, but felt extremely unnatural. One thing I was surprised by was that the hand movement only activated while the head was also moving. I was constantly trying to walk by slowly swaying my hands, but of course nothing happened as my head wasn't moving. I'd suggest making the hands cause movement by themselves to see how that feels. Climbey uses a hand sway system to walk around and it feels pretty darn good.
As an extra to the slow movement problems, I also had huge difficulties in the confined space of the maze. The slow movement difficulty was a big part, but the main problem was the system for dealing with walls. Whenever I touched a wall (which was all the time due to the movement) the screen when black and teleported me a couple steps away from it. This was insanely disorienting and made navigating the maze by far the most frustrating part of the demo. I did very much enjoy how when inside a wall, the boundaries appeared and showed where the playable space was, I think all games should implement that feature. However, I could only see it for moments at a time because I was teleported away, I'd suggest tweaking the system so that running into a wall makes you stop movement, but teleportation is saved for only extreme cases when the person has used room scale to try and walk through the wall completely. Wall clipping and teleportation should never be activated by the movement system alone.
Taking everything in, I'm very happy I gave this a shot. The system shows a ton of promise, especially for open areas. In the mountain level, I actually took the time to run to the highest point I could get to, and worked up a sweat in the process. It felt great! With some tweaking, I think this could be quite an elegant solution to the VR locomotion problem. One strange thing I ran into was a somewhat terrible framerate. Even with my 1080, I had to keep SS to 1.0 and even then I experienced quite a bit of stutter. This has nothing to do with the locomotion system though so it didn't really impact my thoughts on that, but some optimization is definitely necessary for the eventual Steam release. I'll be keeping my eye out for updates and thanks again for such an interesting experience!