Many sources (ex) point out that a distinct advantage of non-metal armour is that it does not rust in the rain.
Also, "adventurers", carrying all their belongings on their back, pretty often find themselves in rain, storm, or completely submerged.
So I was wondering it there is some place out there, where item condition is really well handled? I mean more realistically than the hp/toughness concept.
Note that the "pedantically" in the heading is meant to get some thorough mechanic and answers. By no means do I intend to use pedantic rules in my game. I want pick the best ideas and apply them to some of the most important items in an adventurer's life - food, metal armour, scrolls.