I just picked it from Chester, took the back roads back but left it in snow mode and automatic and just driving normally, 26mpg, probably the only time it will ever be that high.
The Pzero are not gripping at all even with AWD, but it is 3c, wet/slushy so I'd not expect them to either, though probably fair to say PS4S would be a big improvement on wet grip.
Really just cruised in it and it does it superbly, super comfortable, fantastic sound system once I'd figured out how to turn the bass down from the subwoofers behind the seats, that like I was in a night club at first, turned that down, much nicer. Drives flawless, not really given it beans as such and in snow/auto the car is pretty silent unless you get into it more, but no pops, crackles or bangs or not audible to myself in auto.
Just had a spin round the business park in manual, dynamics, slides and drifts nice lol, more pops and bangs, so those who dislike pops and bangs it does seem you can control their loudness via car settings.
Also the car has a got a track built in.