This is unbelievable. As in, I literally can't believe it. There's no way they've come up with a full-resolution, head-mounted, transparent, additive and multiplicative display attached to a computer vision system capable of identifying light sources and nearby geometry that also has 100% perfect hand tracking with haptic feedback. I also don't believe anyone would make such bizarre, quasi-pornographic grunting noise…
As far as the grunting, how is it any different than having a Nerf gunfight or pingpong or whatever people are into at the office?