When I owned my own shop I had a customer who raved about them so I bought a couple. When we had difficulty selling them, I'd offer to install one on the customer's bike and let them try it out. Not a good idea. That turned out to be a labor intensive no-sale. After we sold off all of the stock that anybody wanted, I put them in a box with a bunch of other stuff and sold it to another shop for a fraction of my cost. To answer your question a bit more directly, I never tried one myself.