I should have been clearer. Yes, we learnt things about how he works, how he does the shapeshifting, how he hurts, but nothing feels like vulnerability, just descriptions. I mean, we don't "feel" that he is in pain, he just "says" that he is pain, but it does not seem to bother him enough. And in skin game we already guessed he really cared for more than paying rent. I don't know, I insist, the story is told from his POV but it feels like a third person narrator. Harry informed us more about him that this story.