one thing they mention is that when you get your pants stuck in the chain, they get greasy. Only thing is, when you get your pants stuck in the belt, they get stuck. So you still have to keep your pants out of the belt.

I'm starting to think about this. I had a lot of trouble with my chain on friday, I guess the bike was just the right temp to freeze water in the freewheel or the chain would skip. By the time I got to work, I could only use 1st gear.