Well, since assassins showed up it became the #1 reason for my armor rusting to oblivion.
Killing an assassin at close range spills about 5 bucket-fulls of blood all over you and your equipment. And i've yet to find a way to get the blood off either. Maybe breaking a bottle of water against a wall next to you? I'm sure that rusts slower and comes off easier. The only other way to keep your rustable equipment is to pay thousands of gold to the smith or use repair scrolls until the blood disappears.
System would indicate in graphic if person is mounted on horse or not.
Same system also show if person mounted on boar, elephant, polar bear etc.
Or if person mounted on ass.
Ivan find mounting on ass funny.