Ended up buying mine from Carphone Warehouse. 32gb midnight blue. Ordered about 5pm and it came next morning.
Loving it so far. Don't think it's that big at all and feels quite comfortable in the hand. Was a little worried as I'm a one-handed typer with phones, just using my thumb, and it's still possible (and I don't have really large hands).
Speakers and screen are beautiful. Battery life got me easily through a day with around 4 hours on-screen time on the first charge cycle.
Only downside is that ambient display is a little hit and miss. I have a screen time-out of 60 seconds and a the screen-lock set for 5 minutes. I've found that between the screen time-out and the lock coming in, I get no notifications via the ambient display during that time. Once the lock sets, the ambient ambient display notifications work.
I could set the lock to come on the same time as the screen times out as a work-around to this but it's still a little niggle. Anyone else getting this or is it just me?
Apart from that, I'm loving it. No complaints at all. I was going to get the Moto X for the better ambient display features but opted for this in the end and I'm happy with it.