You mentioned both OWB and IWB holsters. For OWB belt holster I would recommend the Blade Tech Eclipse holster. It's the most comfortable and concealable OWB belt holster I've ever owned and worn plainclothes on duty and off duty. I've never liked any IWB holster as I have felt very uncomfortable with all that I have tried. However, there is a new holster company (Stealth Gear) that manufactures one called the Onyx which is made of a padded, perforated soft material with a kydex shell that covers the pistol. This the most comfortable IWB holster I have ever worn and can wear my full size all steel Kimber 1911 Custom II all day long comfortably. One caveat to an IWB holster is that you need to get pants that are a couple inches too big to accommodate the pistol and have a decent belt that can handle the weight of the pistol. I use a 5.11 Apex Gunners belt.