I have had both... both have their uses.

I do prefer leather though! Looks, the beauty, the smell. Old School stuff. Kydex is good, it's practical, but it's just a soulless piece of plastic to me at the end of the day. It works, just doesn't look fancy or feel as nice as leather doing it. What I do like about Kydex though, no worry for moisture!

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Go ahead... make my day.