They work wonders.
Yes, they help you cool when warm and warm when cool.
But. . . They absorb the minute movements between the seat and your jeans and reduce the chafing. Think as a friction reducer.
My opinion is a short, dense nap. Something like 3/4” - 1” thick, not the long hairy skins you see at the state fair.
We have always used a skin since 1985 while touring. I haven’t ever bought a premade skin, but have bought pelts that match the color of my bike.
Fitting a pelt to the seat is pretty easy. With a sharpie, x-acto knife and needle and thread I could get the skin to lay perfectly. Remember, it only needs to be where your body touches the seat.
I never used straps to secure it. When the rain came, we just took it off and put it in a saddlebag. If it only covers the top of the seat, it really isn’t very big. We rode in the rain with it on until we stopped the first time, then it came off.
If you are having long day issues, my opinion is sheepskin first, then airhawk. The sheepskin won’t raise you sitting height, an airhawk will. Used together you can ride forever.
Give it a go, you’ll like it.
ba