I used protectant (armor all type-think it was son of a gun) on an '85 Honda V65 one time in college. Man, first time I hit the gas hard, I almost slid right off the back. I have a gel seat on the B12, the seat is more of a saddle, so I doubt it would happen on it.. But, ayyyee, that v65 scared the piss out of me when that happened.
Here's a pic of my stock headers using Majic Mix Metal Polish:
Gold still, but clean and shiny :)