I am doing just the opposite of what you are doing. I have a holster being made for a PT145 without an accessory rail, and at the last gun show all they had was PT145's with rails. Now I need to find one without rails before my holster comes in. Good luck in your pursuit.
I use a High Noon skintite for my PT-111. Nice. I did remove the adjustable roller in it and plugged the hole on the outside of the holster with a Taurus medallion that I took from extra rubber grips I had for my 85UL.