Just one more thing, I have a RDL on my V-Strom & sat in it for 9 hours straight, 7hrs. in the pouring rain. Got home, stood up straight, no aches or pains then or the next day. It's called a "day long" for a very good reason. Custom made (from pics & measurements you send them) for you & your butt.
My "B" came with a Ultimate, it's a good seat for around town. Long haul, not so much.