+1Still having issues as well, the 1.6.16 update did not address this issue. 1)) Open the console 2) Remove all your items (optional) into a container temporarily, to make finding the id easier 3) Open the console, and type: player.showinventory Find the name for the Leather Armor, there should be an ID attached to it 4) Type: player.removeitem ID Where ID is the code that's next to the leather armor. You still cannot unequip their currently worn outfit in this dialogue - you would still need to enter. Target them in console (mouse click on them while console is open) and then enter the console command: openactorcontainer 4 This will bring an inventory trade dialogue where you can give them new items and equip/unequip items.
