Are any of the well respected wheelbuilders using these rims? I'd love to get some wheels built with the RR1.1 rims, DA hubs, and Sapim spokes.

They are pretty commonly available, so any good wheelbuilder not wedded to a certain brand can get them. Road rims overall are in a bit of a tight supply right now, but I think Sinclair imports may still have some.

My LBS built up a nice set of wheels around these, and I have been planning on using them, rather then Open Pros, on my next set of training wheels. They make a nice set of moutain rims as well, for what its worth.