The increase in MOI is offset on the Buells by much lighter wheels. With the braking forces out on the rim the spokes can be a lot lighter. My only concern is the extra abuse the rotors are going to take being right on the rim like that, puddles, dirt, etc... Dunno if it would make a difference or not really though.
My only other thought is cost VS performance... I do not think you are going to get your money's worth with these in terms of performance, but they are different...