I had them do mine in leather since I cannot stand sitting on a hot seat when the temps rise to the point where I get the soggy bottoms on the pants (if you know what I mean!). The conditioner isn't that big of a deal, just dump some on your hand and rub it in. It remains cooler in the sun which is good.
However, leather has those wrinkles that add character - or so they say. Just something to be aware of. And leather has a grain that may flow in a different direction than how you may think it should look on the bike. The sliding was noticeable at first, but now has subsided to the point I don't notice it.
One major complaint is that my heater almost seems non-exisitant since the recover. It used to get too hot to the point I would need to turn it down. Now it seems it doesn't get hot enough. I think it's buried deeper in the seat under the thin cover foam, or maybe due to the leather itself? Dunno, but HIGH seems more like LOW now.
Overall, I would call the seat a 30% improvement in comfort over the stocker coming off a "Russell Day-Long" velour-topped seat which I would put at a 100% improvement in comfort. Now that was a comfy seat and I wish I had it back! It was wider than the Mayer and gave more butt and thigh support at the expense of making it harder to flat foot on the ground, but I got used to it fast since the comfort factor made it so much better. Just too bad they take so damn long on their wait list...like months!