Don Hume was a go-to holster maker for many of the S&W Gen3s. I've carried my CS series pistols IWB for years using their model H715-M WCS. Great holster quality and durability. They have a 4th of July sale going on now.
Do not know what look you are trying to achieve, but I opted for a nylon holster purchased at a gun show that can easily be mistaken for a phone holster on your belt. Has served well for 20 years.