Quote Originally Posted by Palibun View Post
They're mainly helpful for, say trials, where you have two healers.
Even in this circumstance, regens are still generally better. You'd only want to use Noct if there are attacks you absolutely cannot survive without a shield, and it happens so often that Neutral Sect can't cover it. Otherwise, you're tanking your own MP efficiency to no particular benefit and putting extra load on your cohealer.