I have had shark skin boots and let me just say that I had them re soled 3 times and the uppers nere looked any different. I had thoes boots for 7 years then they got too small for my big feet!!
The only thing I didn't like about them was they wouldn't hold a polish. If I had polished them on Sunday and wore them on Monday the polish would wear off on my jean bottoms.
I doubt that would happen with your holster. You should never need to polish it. Just might need some sort of ezotic skin cleaner to keep from drying out.
I really like the looks of your holster!! I have one that I got form Fist that is in a zebra print, I like it alot. TJ