Not sure which CQC holster you have, but the Serpa, is the best, non custom holster I've found for crossdraw.
With the multiple hole belt slide, I can get butt forward reverse cant of about 45 degrees. If you don't like the Serpa lock, they also have a level 1 friction fit.
KT Mech makes a custom Kydex that has a multi hole setup to use different attachments, including the Blackhawk belt slide.
Off the rack leather, probably the Desantis Sky Cop is your best bet.
Besides the Blackhawks, I also have a custom leather one.
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