Yes I do store all my black powder, centerfires, shotguns, and handguns protected by Sheath. So far it has worked perfect. Also someone suggested there is no need to swab the barrel clean of sheath before loading. Simply pop a couple caps to insure the ignition system is open and clean and load as normal. I have shot my black powders a couple times like this and suffered no ill effects from leaving Sheath in the bore when loading.

If I were going hunting though, I would swab the bore clean of anything before loading... Sheath is some good stuff, and you're right the smell is rather nice.