How do you like the control interface? Is it pretty responsive? I'm essentially waiting until I can get a pip-boy, which I'm imagining will be soon. I'll have a wrist mounted smartphone-type-thing, and a google glass like thing with an earpiece. I'm not sure how much further I can augment my reality comfortably past that, but we'll see I'm sure.
Pretty responsive! The buttons require a tiiiny bit of extra pressure to push in, but I like that anyways because I have my watch usually pretty close to where my wrist and my hand meet, and I wouldn't want the buttons to get pushed on accident. What's pretty cool is that I can connect my phone to my external speakers and then remote control my music around the house with a few wrist taps. Edit: Oh, and you can set long-presses for buttons to make them shortcuts. I have the top button for notifications, and the bottom go straight to my music.