They don't budge once they are on (in my experience), and are quick and easy to change. Especially good on some carbon bars where the grips tend to slide. The problem I've had with hairspray is it leaves a residue that eventually looses its grip, and then you are left with hard shiny surface (the bar) on a hard shiny surface (the hairspray) and the grips slide around. To put on conventional grips now I typically use something like Brake Part Cleaner that dries almost instantly and leaves no real residue.