Tis confusing indeed. Well, whatever canister you go with, just cover it with super hot, hot sauce and let the bears have their "fun"... i jest, i jest (or do i bawhahaha). And if you don't mind a little bear drool (i've heard it's good for digestion, hair, and nails), you can always recycle the hot sauce later.
Ok, sorry for the completely non serious post, starting to get late here, and feeling a bit punchier than usual.
More seriously if the Denali lady says it's ok, then it should be ok, and if not, keep your correspondence for later proof.