I think the recording aspect is cool, since I assume it has that "first person perspective" thing going on that's usually difficult to replicate without a complicated setup. Especially useful for showing or demonstrating stuff with your hands, etc.

On the other hand, I can't fathom why having a permanent screen on your face is appealing... I don't know if I'm biased because I have a few mild neurological issues, and I'm simply not the target audience