Indeed, it can be even better than pebble ever was imho.

Asteroid project is very active and verbose on IRC #asteroid and github. More watches are ported regulary, like my g watch r was 2 weeks ago.
I am using AsteroidOsSync for android on my secondary phone and this official client only has weather, notification and clock sync working but it is already what i "need" to be satisfied.

As Asteroid is Mer based, how far could the system integration go?