My fiance wears XS (extra small) size gloves and has no problem with the GT grips on her R65. She even used the front-brake technique for starting on a hill. I guess it is a matter of preference - she never rode with anything else, I had put them on the bike when I bought it.
Yeah - the ones on ebay are the last ones I bought - 7/8" does work but make sure the right side grip is larger (1") to fit over the throttle tube. Each to their own - I find they do reduce vibration.
Hey - maybe we can convert this into a "how do you start on a hill" thread! YMMV