I have taken my 01 #1 camping in cold weather (humid and foggy) not even used it and it had rust spots from condensation on everything.

I have also been camping and sweated on it and it rusted even with marine tuff cloth on the blade. Its not that big of an issue, its part of using a carbon steel blade. 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!