I finally tried 3 games - Dreadhalls, Herobound and Smash on Gear VR. While I was planning on using a gamepad to move around in my VR experience, after playing those games I think I have to rethink whole controls scheme all over again.
After trying Dreadhalls, I can say that moving in VR using gamepad is a no-no (maybe it depends on movement speed too). No side stepping, no moving backward, no fast movement. I got sick almost immediately playing Dreadhalls. It's a beautiful and atmospheric game, but I don't think standard FPS locomotion is valid in VR.
Smash and Herobound were pretty cool all around.
I think moving inside VR world is the biggest obstacle to overcome when it comes to comfortable experience. What do you think about this subject ?