Pretty damn sure that the perk "my precious", at least on melee weapons is increasing durability loss by 75%, not reducing it.
It works fine here, testing it on a chest (3 durability lost per hit normally, chance to not loose durability each hit with My Precious, though how that works may be changed).
If the number of hits was not comparable (higher AP of the 2H player balancing out the higher attack cost), then did the 2H player use more special attacks (which currently don't damage weapons)?
I don't know if I'd trust a blacksmith with crappy doors.
There is currently a bug where shields are not re-equipped after digging. That wouldn't account for one ending up in another character's inventory, though.
Click on the body of the guy that jumped off the cliff to loot his diary.
