Just put a HD tallboy seat on my fat bob, and it's great - fits good, even with backrest and rack, my girlfriend is happy now (she hated the stock seat), and it's even more comfortable for me.
I have a LePera Daddylonglegs Maverick seat on my 08 FXDF with Gel inserts (not leather) i am 6'2" and it is a nice improvement over the stock seat. Momma appreciates it too.
I'd love to see the seat too. Just picked up my '09 FB on Saturday and rode straight to Jersey. Started to get the buttnumbness after about 3 hours.