I have ridden with both, I think the seat with the driver's backrest sits you further up toward the tank, I almost feel crowded up onto the tank. The two piece seat without the backrest didn't sit me quite far enough forward??? At this moment I have two Tourers, both have Mustang seats one with, one without the drivers back rest once the weather warms I intend to ride them each enough to decide which I like best, having both here will allow me to compare them on a daily basis not months apart.

CS