Nothing in core rules to say you can just wondering n other people take on this.
My Dwarf char just picked up off a set of Armour off a dead PC who was an half orc and want to wear it.
Also Large Weapon to medium weapon.
I think you accidently posted this in the wrong forum - advice or general rules discussion might get you better answers more quickly. I have flagged the post for you,so one of the mods can move it. Good luck with your query.