FWIW, I use a pocket holster for a J Frame as my daily back up. Have done this for many years now.
I've tried almost every holster on the market and have been able to narrow the list down to two that work reliabliy and consistantly....
The Desantis Nemisis for larger pocketed pant like 5.11 tactical, cargo pant, Dockers, slacks etc and Kramer's Horsehide pocket for jeans. I have found that no "one" holster works well in all pant types best...however these two fit the bill for this type of clothing. The are similar but fundamentally different enough to work in different types of clothing.
The Kramer disappears in jeans but moves around too much is 5.11's for example and conversly the Neminis prints too much in jeans....