I don't know.
I mean they are now discovering that there were a ton of kids toys out there that had caused and are causing a number of problems, and I mean we worry about what kind of lube we use because our vagina's absorb this stuff, we've all talked about quality and many of us make the choice to use only non-pourous toys... isn't adding all this stuff just a little much?
But then again... we don't always know the end result of what we do to our bodies for a long time... I mean P'Gell said it best when women were once using lysol as a douche and as a preventative birth control measure. And hell, how many times have eggs been good for us, been bad for us, been good for us, been bad for us.. and how many people use margarine?
So I don't know if I'd be willing to pay more for this kind of feature.