I pulled a rodeo up a VERY STEEP hill(Dutch John at Uwharrie), on gravel, with no problems with the hitch.
As for towing, considering how crappy our tranny is, I wouldn't worry about the hitch, it would be the transmission and braking power that would limit you on towing. (The 4L30E tranny is the same tranny they now use in the Chevy Aveo if that makes you feel any better)