I have used the Sticky pocket holster for my BW. It’s ok. But not what I liked for such a small pistol. Too much straw and shaving dust around. Otherwise, an excellent choice if you are not in a dusty environment.
For my NAAs, I usually just get an Universal Clipdraw and means cut it down to the length I need and just clip them to the top of my pocket. But down not protect against scratches and dings or straw dust. But very easy to get too and works with everything you wear.
Their is a holster maker on Etsy and FleaBay that makes a holster for NAAs, and you can get it with or without an ammo pouch. I have used one a few years ago and really liked it. Able to put BW in my barn coat and it not fall out and hold more Rat shot or CB caps for critters.
Lefty