I'm with you, it seems neat technology wise but the use cases I have seen just seem almost forced. I mean it is neat but I am not really wowed by the potential. In the realm of teaching, particularly with representation of physical things - this thing will be awesome. But beyond that, I don't know.
The idea of a portable large viewing screen is brilliant but that it not the real main selling point of this. A decent VR head set could do something similar.
In 10 years time, comments like this will either look like a prophet that could see the folly of the future... or be like all those people that dumped on the iPod and iPhone.