I was cycling in Herbalist the other day, and got sick of being infected with "slur." So I ran back to my vaults and pulled out my emerald serpent brooches. Now I do have a couple of alts so I had more than one emerald serpent brooch in my vault. It's not possible to identify which brooch is personalized to which alt in the vault, so when I pulled out a personalized item not belonging to that character, only that character can deposit it again. Annoying... and once again you suffer rent penalties to switch, you loose beacons... and other 1st world problems.
I'm not sure why the game works this way? Is there good reason? Is this idea just residue from the Player Thief days? Can it be changed? If it needs to remain could there be a key check instead so I don't need to switch?