ehhh, I've looked at it a little but it's not really practical. It's more of a toy for people with money to burn.
You can't use it as a main tv cause if anyone comes over...you get to watch tv and they get to watch you looking like a cyborg and watching tv. I'd suggest learning how to do the robot so that your guests can also be entertained while you enjoy the viewer.
I often eat, drink, smoke, while watching tv, your vision to the outside world is limited to a sliver underneath the visor. So I'd probably make a mess knocking over beer and nachos while wearing this thing and doing the robot. Your guests can clean up....they have nothing else better to do.
I guess if you're a traveling salesman and spend a lot of time in hotels it might be worth it if you can watch shows off your laptop.
It is a pretty cool piece of tech but limited in use.