Re: Battery Life
Since I don't have to get my phone out and turn the screen on anywhere near as often as I used to this more than balances the small battery hit caused by Bluetooth.
Turning the screen on sucks way more juice than bluetooth. My battery lasts longer with a Pebble than without.
Perhaps if you only get notifications and look at them a couple of times a day then the bluetooth drain will be more than the screen drain.