It's uncomfortable....but manageable. I expect shorter skinny people would have it much better than me.
The worst was when I (6'3 240 lbs) took my brother (6'1 230 lbs) to the motorcycle shop to pick up his dual-sport. 20 miles of curvy highway and the interstate with that much weight was comical....but we didn't have any trouble going 60-70 mph.
Dont try it at night, the extra sag in the rear shock ends up pointig the headlight up into the trees. Those bikes leave a dark spot right infront of the bike as is since the light is so high up and close to the long front fender.