And as a side note, although I'm fine messing with 'XYZ + swapped matrix' throughout these tests, I won't go with that for the final profile I eventually settle with. It turns out that I have too many side programs that only read the matrix unfortunately. I don't care about color accuracy in these programs per se, but having all preview thumbnails and toolbar icons with messed up colors is rather annoying.
______________________________________ it has a certain smooth-brained appeal