I like feeling tzvia said, a complete wrap around the bar. I am actually running ODI Cross Trainers which I thought were very thin but I really like them. Lots of grip, not a lot of extra weight and thickness I don't need. Everything in biking is personal. I am an ODI fan but may check out those Crank Bros grips. I have had non lock-on style twist AND come off. Nothing but lock-on for me.
Amanda
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan