I love the Ultra Custom (spoiler) because of its use of leather as the main component. Personally, I like carrying a gun in a leather holster (especially IWB) because the material is much softer to the touch than other options. However, there are negatives to an all-leather design. The Ultra Custom is everything that a leather holster is, without these negatives. Gun retention is on par with a Kydex holster if it is fit right!