Without a doubt its SO much nicer to have a roll of toilet paper on your camping trip... But one of the inherent downfalls for a roll of toilet paper is it acts like a huge blotter absorbing the humidity from the air and making it almost useless. And too, that unexpected rain shower can turn that roll hanging on a stick to a blob of mush in short order. Coffee cans are wonderful for keeping your important papers dry and ready for use under any outdoors weather condition.
AOJ Outdoors Tip - Keeping Your Camp Toilet Paper Fresh and DRY!