I don't want to ruin anyone's idyllic fantasies about how phenomenal this must be...so bear in mind I can only speak to my own experiences as a lee here. It's almost as if there is a toggle for me, between pleasure and tickling sensations---which is complicated by the fact that tickling itself turns me on, so what we are talking about very specifically here is what message the nerve endings are sending to my brain and the response that I have to them. In a state of being wildly tickled, if you were to vibrate me, there are two possibilities, either the vibrator tickles, and everything keeps tickling, or my toggle switches over to pleasure, and the sensation of tickling is no longer something that my body is paying any attention to--almost like the spell is broken, and my nerve endings are now overwhelmed with pleasure. Not to say you can't switch me back and forth, with some amount of effort. You are better off just tickling my pussy with tools that don't have the intensity of the vibrator (perhaps because I am very sensitive and ticklish there), and saving the vibrator for when you're ready to switch things over to more pleasure focused endeavors.