I tried the Void a couple weeks ago in Orlando, uses the Oculus headset and the hypatic suit, ran their star wars mission. Was pretty good, the full VR overlay. We did it twice on two separate days. Over all quite fun, but I noticed some input lag and a bit of off-set on the overlay.
All that said, was still a fairly immersive experience, moving across "narrow" platforms was realistic enough to make you nervous about where you put your feet and I could feel it when the wife was shooting me in the back. Might need counselling. The tech is really starting to get where it needs to be.