+1 for the AirHawk. It makes a nice change.

I've never ridden on sheepskin, but many of the motor LEOs here in Phoenix swear by it. The closest I've come to that was a couple of custom reupholstered seats using a velour-type material. It makes a huge difference in the desert heat.

The nice thing about reupholstering is it can be done locally on the cheap. If $ is an object, it beats the hell out of shelling out for a Mustang or Corbin, etc.