Regarding the Snapdragon 835:
Display Support -Max on-device and external display: Up to 60fps
This is pretty much a deal breaker. If they really intended this thing to be usable for VR, why on earth doesn't it do 90 or at least 75 fps?
Regarding the ODG glasses, I'm quite surprised at the small number of cameras and complete lack of depth sensors. Compare with the number of cameras (and depth sensors) Intel and Microsoft are using. Without that, AR will only work in a space with lots of non-reflective, fixed objects for the camera(s) to track.
I'm sure the add-on modules for the R9 will include one with more visible cameras and a depth sensor module (either ToF of structured light).