i rode that saddle for a while. it was okay, but not exactly comfortable. thats about as padded as you're going to get with a kashimax though, they are designed for riding for a few laps in a race, nothing more.. I did 60 miles on it and was okay, but hated it at the velodrome. be aware you will need a 30mm rail width seat post. nitto makes the jaguar in that width, thats the only one availible as far as i know.
they do look awesome though.