I can actually see more use-cases for Google Glass tbh - having a HUD would be useful when using Google Maps for example, like a fighter pilot.

And being able to take photos/videos with the glasses (like the Meta ones nowadays) is really useful with my kid because he often does funny or cute stuff and I don't have time to pull my phone out to take a video/photo of it. I guess it could be useful for video calls too so my parents can see him.

But I just don't see anyone sitting in an office, or even at home, talking to their computer. It's really only useful for hands-free settings like when you are driving, or in the kitchen etc.