How many women would voluntarily sit down on a cold, dirty toilet seat to pee if presented with the alternative of using an apparatus such as a man's "handy dispenser"?
answer:There have been plenty of devices to help women stand-up-to-pee on the market for years. They haven’t seem to have taken the world by storm, I don;t know of any women that have used one, even when backpacking in the wilderness or on road trips with only gas station bathrooms. So to answer your question: “Slim to none.”