I have put the ISOs on every bike I have ever had and will continue to put them on every bike I get. I wear gloves every time I ride, and yes, after a while the coating on the rubber will wear off and I get a little on my gloves and I can see on the grip where the wear is because the rubber dulls as the shiny coating wears off. However, that is a small price to pay for the most comfortable grips I have ever had. It isn't like they will turn your hands black for a week like getting caught in the rain with a pair of new black gloves.