Overlap between SPN fandom and readers of Sarah Monette?

So I'm about to dive into my shiny new copy of Corambis, the last of the four books of Sarah Monette's Doctrine of the Labyrinths series, and I'm wondering, not for the first time, whether there is some overlap between readers of these novels, and SPN fans.  Because you'd think if you like one, you'd like the other.

( And here's why: )