I make an adapter for the Hogue Power Speed holster that works for any S&W revolver from 4" to 8-3/8". You can check it out in the vendor forum. I have been using this holster in competitions for many years.
AZ shooter, I use a bunch of safariland holsters but they do not make a 4" N frame holsters that fits a slab sided barrel. Bob, I have seen all 3 of those you listed, but couldn't judge one from another. I will just pick the one that seems to fit my needs best. PD, not familiar with the Hogue holster but will research.
thanks for all the help,
fuzzy