Anyone compare the seat that comes with the XDiavel S (supposed to be different than standard XDiavel) and the optional Super Comfort Seat (plus) from Ducati? It comes in the touring pack with windscreen and tank bag and was wondering how it was different than the S seat? I see that it is 22mm thicker than standard seat. I guess second question is how is the S seat differnent than the standard seat? It says with different materials but what does that mean?