Have you looked at Kangaroo Carry? I'm not affiliated with them but have been a user of the holster since just after I got my then CHL. I recently bought a second one because I had washed the first one so many times that the stiffness had gone out of the muslin.
I play musical instruments in my church and can do that in a dress shirt (no coat) in front of the congregation while wearing the Kangaroo and my Sig P250 Compact. Drawing is slower than with other types of holsters but it beats not being able to carry in a more dressed up environment. I was detected once at a funeral through hugging but otherwise have had no problems for many years.
One of my friends expressed concern about carrying with a chambered round in the Kangaroo. I have a Glock 30SF with a very light trigger. I unloaded it, put it into the Kangaroo and tried prodding and poking every way that I could think of to get to that trigger but could not. The muslin is thick enough and stiff enough that it doesn't seem possible collapse it enough into the trigger guard to cause a problem. My Sig is a heavier trigger and longer pull.