Mack,
PJ's holsters.
I've got one for a XD-s 45, LH, OWB, no light, obviously fake brown leather (like the faux leather look), no paddle (integral loop). Has an adjustable retention screw. Like mine.
Only lists the HK 45, isn't there a full size and a compact? If so, may need to contact him.
Which trigger do you have on your HK 45? I recently tried the LEM (v7) trigger on a HK P2000 (at a local shop), loved it... but I'm also fond of red dot sights and the HK 45C's aren't milled for one.
Jerry
https://pjholster.com/products/owb