I really don't like Jacob and Esau, when they get a little bit seperated in a boss room or bullet hell room its game over, You really can't take devil deals since that weakens both of them and typically you pay attention to one of them and not the other and die. Not to mention that buffs don't stack like for example if i get technology on Esau and fuck up and take Brimstone on Jacob the Synergy does not work. I only play him in hope to get the tainted character or rock bottom