CastAR now also comes with VR which means that in VR mode you won't see anything but the game, exactly the same as on the Rift. In which case, the relevant ques

CastAR now also comes with VR which means that in VR mode you won't see anything but the game, exactly the same as on the Rift. In which case, the relevant question is whether CastAR VR is as good as the Rift's VR.