I think I bought mine from LAPG, looks like Safariland doesn't make them anymore.
Dillon evidently still has them:
https://www.dillonprecision.com/gear...ts-pouches?p=2
I use a Comp Tac holster (International model) for my CZ pistol and had to remove only small section of kydex to make it work with my RDS installed. Just checked their site and they offer that model for the 4" N frame suitable for IDPA. I'm thinking this could work for field purposes. If I have a good week maybe I'll get one ordered. I use a USPSA legal version of the holster for my 6 1\2" 29 with RDS but wouldn't consider it secure enough for the field.