This looks clunky and a lot of the marketing looks contrived. We all know it won't work the same as in the videos, since the viewport is more constrained.

More than that, I feel that with every VR solution there is a comfort and practicality issue. How long will it be comfortable on your neck and head to be wearing this?

For limited applications and for a short period of time then Hololens and similar tech could be useful and entertaining but in general I still thing the hype is ahead of the technology.