QTR-Quadtone RIP

So let me understand this.... Lightroom is ProPhoto and has a gamma of
2.2 not 1.8 that QTR needs to "see" to print correctly.  MadManChan
has posted a 2.2 to 1.8 correction profile on the Lightroom forum
(load into print profile in print dialog) that will convert to 1.8
before it sends to QTR.  I tried this driver and the prints were
exactly identical so I guess I am working in sRBG or aRBG and did not
know it. Other Lightroom users lurking, can you share your workflow? I
am on a Mac with version 1.4.1 LR. 

Thank you,
George
george-at-videonow-dot-info