Kyle, My understanding of the storage question is that there are chemicals used in the process of tanning leather which causes knives to discolor if stored in the sheath. Knowing this, I did it anyway, and stored several non-stainless knives in sheaths and sure enough, they are discolored. I have had some stainless knives in leather sheaths for years too, bu no discoloration. I think storing knives in Kydex is fine...no chemicals.