Thanks for all the positive reactions. It's nice to hear that people are actually interested!
I spoke with some folks at one of the local adult chains, and I'm seriously contemplating getting them in their stores.
This is currently the only 'model' I've made, but I've been considering some other profiles. (Bumpy, knobby, etc.) I'm not a carver, so some of the more elaborate shapes won't be coming into play, but I can do some interesting things.
I've actually been consider drilling a hole in the tail-end of them that the end user could then use a bullet in. . . It would provide additional functionality, without any sacrifice at all!