Also, different upholstery can have different effects on how your kilt falls into place underneath you. When I bought my Volvo, it had velour (cloth) seats in it. I usually wound up with most, if not all, of the pleats between the seat and the armrest on the door. Switched to leather seats. There's enough of a sliding effect with the leather, to prevent the mess of pleats hanging off the seat. That said, in the summer, leather does not seem to breathe anywhere near as well as cloth does. So, a couple times, I've cooked my family jewels...
-J