This has worked out well!
If the button (double-click) is assigned to the CV quantizer, it'll step through none, chromatic, major scale, minor7 scale. If there's no CV input, the scales can be played with the knob. The maj & min scales use the CV knobs position at start of record as an offset for the scale (tranposition) so it can be easily played in any key right away!
If a CV input is applied, then the Knob acts as a smooth offset for the CV so can tune any VCO/key offset. I find it easiest to patch in a dead signal, tune the knob, then patch over to the CV source and it all quantizes perfectly

Thanks again for your insight! It made the RIT_M a winner ;)