You are not going to go camping in the back country for a week plus and not have rust... unless you are always taking care of your knife and not using it!
Sorry, I have to politely disagree. Not only camping but CANOE CAMPING ... FOR A WHOLE WEEK.
Used the #5 every day, including kitchen duty. And when it wasn't being used in was in a canvas thwart bag (not waterproof) attached to
a canoe cross brace right in front of my stern seat.
After each use ... washed with clear water and dried it with a rag ... or my shirt or pants.
I think keeping it clean and dry between uses is the key.