It's great for sport touring, but yeah, it's pretty uncomfortable. I just got mine barely bearable for more than 70 or so miles with the heli's and buell pegs. The seat is a plank as well, and I plan to re-pad and cover it myself this summer. It also doesn't have a massive range, although not a tiny one either.
All that being said, it's my sport touring bike of choice since I don't plan on getting a new bike any time soon; and I love it. I even got inspired by a day-trip thread out to Alpine, TX that got me planning that 1000 mile run sometime in the fall. (which is why i need to re-upholster the seat).
Supermoto bikes exist so that 40 year old men who know better can act like total assholes.