Can confirm, still works great.
Also works with everything you can carry in hands
Player 1 and 2, choose your role;
Item you wanna dupe is on the ground
Player 2 opens inventory, eats something
while eating, drags the item into his hands,
gives command to player 1 that he can take it and switches it to his hand
Player 1 takes weapon, opens inventory, drags into hand
Player 2 stopped eating animation
Player 1 clicks on the X in his hands
Player 2 loses weapon
Player 1 does a re-log
Player 1 has the weapon in his hands and inventory