I prefer the standard pancake type of holster, makes the holster's width less than snap-off style.
These my preferences:
Carried the little Model 19 for many years, but switched to the Ruger about two years ago.
No, I don't open carry, my gun is usually concealed by a sport coat, jacket, or in summer, a vest.
This was one of my earlier holsters for a S&W Model 586: