I just did a 150 mile loop of the NY "North Country". The seat rides pretty well; I was always aware that I was on a stiffer material, but it never turned into "butt burn". A couple times, I stood up on the floor boards and sat back down to get everything to settle back in to place, if you know what I mean
Meanwhile, not having a back rest was not a problem -- the lower back support of the seat seemed sufficient.
The big problem is standing still. The forward part of the seat a tad wider than stock. I'm inseam challenged (27"), so this makes my legs splay out a little farther than the stock seat. The result is that at stop lights and such, I can only use one foot. If I put both feet down, I don't make good contact on the road with either one. Dog paddling around in the garage to park it has become a bit of an adventure.
I'm not ready to declare a definitive "yea" or "nay" yet, but the riding experience, combined with the poor fit, doesn't make me as happy as I'd hoped to be.