Yes, I would really like full OpenCL too. A while ago I tried the opencl packages that were available, but never could get something like folding@home to work. I think they are specifically looking for the proprietary driver though. I've gotten some opencl stuff to work, some example code would run and clinfo etc did display support.
I don't run linux much on my main rig as my Powercolor GPU tends to hard lock Linux. Firmware related it seems like, only way to get around it seems to be to unplug it.