Well, they're fun to use and help to build up anticipation. First, make sure you have some classical music to hand (Beethoven's 7th has some lovely builds and crescendos interspersed with some gentler reflective passages so she can get her breath back-
www.youtube.com/watch?v=-4788Tmz9Zo) After your lee is thoroughly secured, put on your best Hannibal Lector smile and slowly bring out the little wooden box you've bought at the thrift store to hold your finger armour. Show it to her. Tell her it's a l-i-t-t-l-e something that will overcome every vestige of self-control she thinks she can muster, gloat, gloat, waggle eyebrows.
(Rehearse this fine phrase carefully on your own so you can deliver it with a straight face, which will probably take hours. KT has pointed out that if your lee has anything to do with show business, as she herself does, any laughter induced will be completely the wrong sort, being before any contact whatsoever occurs, and at you rather than because of you. We ourselves enjoy dressing up to go fetish clubbing but don't roleplay because we'd keep giving one another directoral notes. But I digress...)
Then slowly open the box within her field of vision, set it down in a stately fashion, and one by one while holding her gaze, place each piece of finger armour on the appropriate digit. Then unfold your forefinger, extend your arm and begin tracing lightly around her body to find her most vulnerable spots, while chatting pleasantly in a faux-evil manner. 14 minutes into the symphony, the second movement is especially good for slow exploration and you can get all your other fingertips into action.
Anyway, you're off to a good start, and you prefer something different, do that.
Above all, have fun.