I'm considering switching from my Shimano Ultegra to Campy Chorus. I have an FSA carbon crank 53/39 and a set of custom built wheels (Dura Ace hubs, Velocity rims, Sapim race spokes) that I absolutely love. I'm figuring I need to get the Ergo levers, front and rear derailers, cassette, and chain. I was hestitant to even consider doing the switch since I thought I would need a new set of wheels or at the very least a rear hub that was set up for Campy but I understand that American Classic has a conversion cassette that will allow you to run Campy on your Shimano hubs. Just wondering if anyone has used this or if they have heard any feedback from anyone doing this with success?