TexasCHLforum.com

I use mink oil for my boots in the winter; it's supposed to improve water resistance and help my feet stay warmer. I do think it's effective for those purposes (I have to wash it out in the summer or my feet get too warm; it doesn't let the leather breathe as much as other products do). It also helps keep the leather soft. Whether it would be good for your holster I can't say, but that's my experience using mink oil on bullhide leather.

They say it can affect the color of your leather, so be aware of that if you try it.