On that I agree. They aren't entirely benevolent, and when Eferin possessed me I felt urges that I should not have. I don't think of any of them as evil, but they most definitely are not human. They think differently, like all spirits.

I'd be just as cautious about contacting any of the others, without either a lot of evidence of their benevolence or a guide at the very least. And even then, I'd never walk into such things blindly. That's asking for trouble.