Lets say you can physically see a 2hander, two 1handers, and a shield at once on your person:
ex#1: Shield on back, two 1handers on your hips, while wielding a 2hander. But the Bow, shield, and 2hander takes up the same slot.
ex#2: Lets say you have a sword/board out. If you equip a 1hander in you left hand your shield get placed on your back.
Im not going to lie this is a pretty difficult system to get to work, but what are your ideas? I would love to have dual swords or a shield on my back.