[GearVR] Switch to GearVR during runtime.

Hello!
 This might sound like a stupid question to some. I've tried to find any kind of info on it, but haven't sadly come up with anything, in terms of GearVR.
Is it possible to start the game in FPS and then have it switch to GearVR during runtime with the press of a button for example?

Cheers, Shad.