Yeah, not like the Hallmark cards at all. Strong believers in fate, they also sorta remind me of machines, following orders, no changes, strict, etc. I'd been surprised about it myself at first. Until I'd actually seen one in person but thankfully she was on our side.
But I'm thinking there may be ways to ward against them just as we do against demons. Bobby Singer would mostly likely have some good info on that, or even Sam. There's also a class by Lexi that'd have some stuff about it too.