The defense on Cloak of Darkness suppresses once you attack. It drops to 1.88%, which is identical to Combat Jumping.
For an extra .19 endurance (almost 4x the cost), CoD gives you stealth and a perception buff over CJ. I suppose you should also consider the extra 1.88% defense while not attacking, but that hardly seems very useful to a Brute, especially one that will likely be running Cloak of Fear, Oppressive Gloom, and/or Death Shroud.
I took CoD for theme, but I often wonder how much better I would be on endurance with CJ instead.