Yeah, well I don't like the Gran Turismo's at all, too slippery and no good with "pullback bars", you have to work hard to hold on at speed as your hands slowly slide backwards due to their shiny finish, so your hands fatigue long before your butt does.
I cut mine off and installed a cheap set of thin soft "no name" grips last week, but I like the look of the Oury's, so I might buy a couple of pairs to replace the GT's that I've fitted on other bikes in my garage. Cheers, Terry.