[k3d3]

> For example, using it sleep tracking, or for waking you via vibration (as not to disturb your partner)

Yes, the pebble is great for that.

> or even just allowing your phone to detect that you're asleep so it can turn on do-not-disturb.

Wouldn't it just be able to detect that if you plug it in at night?

[sri_cyberdude]

Yes i started using Pebble last month. I like it. I had to charge once per week, charges within an hour and its not a smartphone juice drainer (i use BlackBerry Z10). Though number of applications and support is good in Android/iOS for obvious reasons.