Yes I got one! It works well, I don't keep it always connected but in certain situations it is very comfortable to see the notifications on the fly, with a vibration on your wrist... I use mainly Watchit and not all of the extensions available, some of them (for example gmail) are unuseful, because with Watchit you can see all the notifications you want on your watch, from every app or from those which you selected.
It doesn't drain much battery on stock rom, also because you have to consider that the screen time of the phone will be reduced. The battery is very good: if you use the SW2 very intensively you're gonna have to charge it in 3 days, but if you use it mainly as a watch and not always connected you can easily arrive to 5-6 days of usage.
The annoying things are the few watchfaces (I think 8, and some of them are very similar) and the fact that when you read a notification from the smartwatch it doesn't automatically mark it as read on the phone. Sony should update it more, because I think that it could have more potential, even if it's not supported by a great hardware, it works quite well. You don't have to expect a computer on your wrist or something that makes miracles, just a nice watch (with the metal strap I think it looks very good, and the reflective display is great to always see the time) to see your notifications when you're busy and you can't keep watching at your phone, and then it has some cool stuff like vibration alarm, timer, weather app, notes, find-your-phone app, torch and others.. Hope that this can help, sorry if I wrote a lot
