Thanks very much for all this - I've never had leather seats, but my sister (a Motability driver with a brand new Vauxhall Mokka) just got them and your temperature comments echo hers.
I guess the heated seats in the RCZ help one part of that, though having tried it on a rather chilly test drive last week, it did seem to warm the bum without warming the rest of you - I then realised the AC was on full blast (which at least proved it worked, unlike another car I test drove).
Presumably there is no heating element in the back of the seat? (Can anyone else confirm? It may just have been not working, I suppose...)
I'll pass on your comments about caring for the leather, though my sister only has the car for 3 years, of course, so motivation may be lacking...
I'm not a vegan either - married to a veggie (well, technically, a pescatarian...) so don't eat as much meat as I used to.
Kind of agree with the vegan principles, but still like the occasional steak and and trimmings...