I was in Duskwood this morning attempting to take down my arch rival, Mor'Ladim, solo (I'm level 30). In the middle of the fight I gouged him so I could bandage and continue. Even though I have Improved Gouge, Mor'Ladim started hitting me again after about two seconds. It surprised me because my opening CS incapacitated him for the right amount of time. Are some non-instance mobs, like elites, about to escape its immobilizing effects? Unfortunately I don't have much experience with Gouge as you don't really use it for leveling.
BTW, I almost took him down. But I guess almost doesn't count for much...