I have not had any experience with Kirkpatrick. With OWB you will have a lot more viable options than IWB. There are several off the shelf makers that produce high quality leather, kydex and injection molded solutions. When carrying my Glock, I use the Blackhawk CQC w/Serpa. It comes with paddle or belt carry options right out of the box. I carry paddle - but did cut off the tab on the bottom portion of the paddle - it just makes removing the holster a little easier. It is an excellent holster. Bianchi makes some good leather holsters that can be had at most outdoor stores too. Highnoon has some in stock - but like any other custom maker - if they are not in stock - you will be waiting weeks if not months.