Feedback:User/Codin/Inventory carried by Companions

Since the companions on being reworked and their role expanded in GW2 I was hoping they might be able to carry some inventory.

In GW my character ends up carrying at least one alternate weapon for the heros I use most often. Not to mention the runes I keep in storage to swap on my heros.

They would not have to support a lot of inventory, something like a 10 slot bag would be awesome! Their bags could be restricted to customized weapons as well as runes for their primary profession similar to the Equipment Packs in GW.