Blade Tech's IWB's work great, and are reasonably priced, especially when you consider their longevity.
I used one of their original IWB holsters for daily carry for about a decade with my Colt Commander back in the mid 90's, and I still have it today, and its still as functional as the day I bought it. That holster stopped my summer rust issues about cold too.
Their Nano is about the same holster these days. If you like AIWB, their Ultimate Klipt works great too.