having a second screen for notifications and short information bits is really useful. After a month with the LG Watch, I'm convinced this is an essential addon to use with a smartphone.
It feels really stupid now to think that my phone would make some kind of noise to inform me that something new happened, and that I should probably get it out and unlock it to check if this is maybe something I want to act on right now.
Android wear is smartly not about "an Android phone on your wrist". It acknowledges that your wrist is a great place to glance at information, that this is what watches have always been used for, and provides a dead simple interface for exactly this usecase.
It's the calculator apps and the pizza ordering apps (stupidly featured at I/O) that put this great product in danger of being misunderstood.