Count me as one of those not really sold on belt drive. I have had two friends lose a belt on the road, one late model Buell, and one on an HD.
I have put many miles on chains without failure. I can't remember when I last heard of someone discussing a chain failure on a road bike.
Oh, do we need to mention BMW final drive failures here, too?
Despite all that, I do own a belt drive Buell and shaft drive bike.