Thanks for your comments, it helps me achieve my primary goal of building holsters that are comfortable as well as functional. Kydex edges can be finished in a number of ways from smooth with an automotive shine to a matte finish with squared or rounded edge depending on the thickness of the Kydex. I have made a considerable amount of IWB holsters and have not heard of any issues with the Kydex being the source of irritation, usually it comes from serrations on the slide that my not be covered by the sweat guard (body side) of the holster. Possible irritation from the Kydex will be another item that I cover when customers try on my IWB holsters.