As the "mystery" of the seats deepens, I was lucky enough that my dealer had two side by side I could sit in.
Both had heated seats.
One had the cloth.
One had the leather.
BIG difference. So big I photographed it for you all.
The cloth were MUCH firmer and had MUCH more padding. The thicker padding kept my butt and thighs off the plastic sides.
The leather was softer and thinner and compressed much more- kind of like letting the air out of an air mattress when I sat in them. Eventually, my thighs would hit the plastic sides.
I am 5-9 and 210 pounds, 36" waist.
I thought the difference was dramatic.