I watched their various videos and demo's, and I'm entirely unenthusiastic about this. I understand that with "augmented reality" development, this could have some potential, but what they showed the invitees and public via their videos was that now you can record your extreme sports with something other than a GoPro. And that Google X Labs can stream it in real-time...
Interested to see where the technology goes, disappointed at their presentation of it.