Ok so going on 3 weeks now.
I am running 2 sims (MTN and Telkom) so using upto 45% battery every day.
Edit: Also note that I have wifi, BT and location on all the time. Wifi only connects to my router at home (evenings and meal times). BT I use to listen to music which is very, very seldom (average 1 hour per day). I do know that location uses battery, but not so much that I panic about the battery going below 40% in a single day.
I spent the weekend at home this last weekend and only used 20% the whole weekend. So good "standby" time there. Wifi was on and connected.
All is going well. No problems so far. Dropped it a few times and I has landed in the water more than once.
I quickly got used to size and weight. Much prefer the fingerprint sensor on the back and have logged both right and left fingers. Haven't tried the facial recognition yet. Don't think it would recognise me in the mornings anyway.
One thing I wish: reprogramming the SOS button to something useful.
Look out for the new BL9000.