I suppose it's early days, but I was surprised that what you see in this VR is limited to what your monitor(s) can display. I would expect a VR UI would be its own "monitor" output, similar to how a PDF printer is its own printer. What I mostly saw in the video was two monitors (active areas) in a 360 degree field of essentially nothing.
Not to belittle, it's cool, but it's not enough to make me want it.