I for one am patiently waiting for my smartwatch, at which time, I'll probably start phasing out my smartphone. I have no desire to have a heads-up display. My life isn't that intense, and my need for data isn't so constant. Also, 99% of glasses look downright silly on me. There is about a 0.01% chance that Google Glass won't.
I can't wait for a watch because I can stop carrying a phone in my pocket.