Well, I have now. I am a little skeptical and curious to see if they really work. Seems like you would not have the pressure needed for a long bicycle haul. I like my tires nic and hard and it seems you would be dealing with a softer tire which would give you more drag and that equals less miles per ride. The upside would be great out here in the desert where flats are inevitable regardless of what you use to prevent the flat (although my tried and true combination of heavy-duty tubes, tire liners and slime have been holding quite well). Very curious as of the cost for a pair. I can't wait to try it out though. Of course they are not offering them for bicycles yet "coming soon".