The USB connector is easy to find, however, but I'm having trouble finding the connector at the camera end. So I ordered the one from the ebay listing which will likely be long enough for me since I mount my camera on the 60d. I put the camera up high enough to shoot over people's heads. Not so great a system for monitoring audio levels.
If I'm up front, I use a wide angle accessory lens and shoot from a lower position. Then it's really convenient to have the 60d and the camera mounted together on a stand together.
If it comes down to it, I'm pretty sure this is a two wire power supply line that could be sliced and extended in length. I'd still like to find a source for that camera connector.