[Bongle]

To be not entirely doom-and-gloom, I think one workable approach would be to design a more-open helmet/case that holds a smartphone in your field of vision without entirely blocking it. Kinda like the gear VR, but with better sightlines so you aren't entirely blind to the world around you while wearing it. Plus, then you wouldn't need to worry about an on-oculus camera since you'd have your normal eyes.