Received my case a short while ago. The first thing I tested was the GPS functionality. After inserting my Hero 7 Black, I went outside and the GPS connected perfectly. Tried going inside and outside a couple of times, and the GPS connected perfectly each time, as advertised.
The whole case is solidly made, though sliding the back on is a little tricky at first. The screws that allow you to mount the GoPro accessory adaptor come with tiny little spring washers, and include a hex key. The 1/4" tripod adaptor thread worked on both the tripods I own (generic brands).
The only thing I can't work out is why there is a little bit of self adhesive felt included.
That aside, the GoPro feels solid when in the case, there is no movement at all.
Overall, I am extremely happy with this case, and I'll probably use it whenever I use my GoPro.