I think, I stay the hell away from those powers. Who wants to have more of those brainworms in their head?
Maybe it is worth doing an Astarion playthrough to test that out - he likes his brainworm and I don't care about him, so don't care, if he gets a bad ending.
I will do a roleplay where my Dark Urge is so terrified of her violent Urges that she will put Tadpoles into her brain in an attempt to escape this. From that perspective it can work.
