Hate to beat this to death, but if you can put your hands on the actual holster(s), look at stuff cut for the Glock 19. I don't wear IWB often (and then only a generic Uncle Mike's that fits all my autos), but I have an increasing collection of holsters for my 9mm 24/7 Pro C that were originally intended for the 19. Typically a little extra barrel length, but not an issue. Hopefully the molds start going around and gun-specific holsters start appearing for the 24/7 line. Also, I have found some interchangeability with holsters designed for the Ruger P90 series.