I had the SOMA Kamisori saddle. Should have been called the SOMA "My A** is sore-y". Seriously, I could have ridden on the end of a broom handle and been more comfortable.

It was super-cool looking on the bike, but just seriously impractical. I now have a Selle An-Atomica. It is insanely comfortable and the leather is waterproof. Doesn't meet your criteria, but it worked for me.