We were talking with the sales guys here in Calgary and one of them pointed out that, they make a good excuse to ticket a rider if they are looking for a reason. Our local enforcement types are not always the most fair minded of people, and when they target bikes for extra inforcement any little thing will do.
For that reason my son has left his under tail stock. He is on an R6 these days and the police seem to have their annual hate on for sport bikes. I have never really gotten the custom bug and to date have only ever replaced my windshield.
Side note the Suzuki 07 double bubble fits my 06 like a charm.