When you are cloaked, you will not trigger an AI reaction when exposing enemies, allowing you to get in 1 free shot while they are completely in the open.The movement bonus from the armor, along with the base +3 movement distance, means he can move an insane amount per turn at 0 risk at all. I like to equip a support class with this armor.This makes it extremely effective in several ways.
The stealth ability doesn't shut down at the end of your turn, but the end of the enemy's turn.