Ok, got lots of miles on it now. It is awesome. F' that factory seat. Had to raise the passenger foot pegs, there is a really slick bracket available for that. While I am thrilled I think the wife is more thrilled. Backrest is very comfy she says and the giant arm rests are her favorite part.
It also looks wonderful, it adds an elegance to the bike. Driver backrest just pops out of you don't want it.
Only downside is it does not use the factory controls for the heated seat, it has its own buttons on the side.