Have used this device only once so far, and it seems to work very well. It's very easy to use and attach to the bike, and seems very solid structurally. It is an absolute must have if you have a bike with an other then standard top tube. And since so many mountain bikes these days do, it essentially becomes a must have if you have a mountain bike. As well, if your cables run along the bottom of your top tube, you avoid having them pushed up against your bike and scratching the frame, not to mention stretching and then not shifting right, which they would do if you hung it from the top tube. The red ends of the device are coated with a rubbery material so they don't scratch your bike. I use this device with the Yakima Swingdaddy Rack, and its a win-win combination. I would recommend both items to anyone.