Update at 2.5k miles:
Tyres are fantastic. Warm up is almost instant. Tread depth has gone down to 5mm, so plenty of wear left. During recent warm March weather (equivalent to British summer!!), I did a twisty B road. Grip was awesome, but it felt like the rear was squirming around a bit. I think this is more due to the XT suspension, rather than the tyre. I upped the pressure to 32PSI front & 33 rear as I am about 93kg including gear/lid (too many pies...), & increased preload by 1 notch. Scalloping is quite evident on rear shoulder; I think this is a result of single cylinder drivetrain + my point & squirt ham fisted riding style.....
Whatever: I thouroughly recommend these tyres!!