X-Carriage for Jim's Flying Motor Mount Dual Extruder

At last! Here's the long-promised X-Carriage for my dual extruder http://www.thingiverse.com/thing:34821. This is a slightly modified version of Greg's X Carriage for the Prusa. I've also added a mount for dual nozzle cooling fans. A print cooling solution will be coming soon.

Can actual dual-extrusion printing be far behind?