When we craft a holster we use the smooth bull hide leather on the outside and the ruffer portion on the inside. When someone adds a liner we add a second layer of thinner bullhide leather and use the smooth side inside the holster with the two ruff sides against each other. This process is to enable is a smooth drawing of the weapon, instead of suede having some friction when drawing. Secondly, suede tends to not mold as easy on the inside as the bullhide, enabling less retention. The bullhide leather molds with great detail and definition in the leather. The bullhide leather is not as thick as the suede causing better concealment of the holster when wearing.