Ian’s experience of using Android Wear echoes my own in large part, especially this paragraph:

It’s also much, much less intrusive in social situations. Glancing at your wrist for a second to check an alert lets you stay more present in the conversation which is happening around you than ferreting around in your pocket, dragging out your phone, switching it on, checking whatever and putting it back. And of course with the phone, you’ve got the temptation to keep it on the table in front of you, glance at it, maybe see what Twitter is talking about… all of which breaks the social contact you’re having in the real world.

To which I’d add that the physical gesture of glancing at one’s watch is something we’re pretty much globally comfortable with in social situations, unlike say getting your phone out and trying to maintain a conversation…