I guess I'm the odd one here. Had the ISOs with the throttle boss for about 18 months. Okay for short trips <200 miles but after 400 miles the black knobs were like holding onto rocks. And I was wearing gloves. I ditched them and went with the Gran Tourismo knock-offs. $10 ebay. Man these things are comfy, sticky and NO vibration. I'll not be using the Kurys again.
http://picasaweb.google.com/lh/photo/jC1WetoudHYXPVgNoSG9gg?feat=directlink