Under C1 6, I submitted a support ticket about problems getting print colors correct. The response from Phase One was that I had to output the RAW first to a TIFF, and then print from the TIFF. This worked, but I find it very strange, as no other RAW converter requires this extra step. If I have to produce the large file for printing, I might as well print from LR.
I haven't tried printing directly from C1 7.