Given that he's already dealt with it and knows how to use it, would he not have to go through the negative side effects?, i mean he needs Senjutsu and Jugo only can do the Susano not just him.
Not the same concept, as Sasuke's body was rejecting the Curse Mark at first. Now that he's spent years with it, his body has adapted to not reject it. Therefore, if he were to get it again, his body would react with "Oh, it's this again, I remember this, this no bad."If you are stabbed with a sword and then become a master at using said sword... does it no longer hurt when you are stabbed with it?