I'd second the barghest theory (along with the 'too non-human'). Wendigos are closely related to cold - places like northern Canada.
Bargheists are supposedly dog-like, that'd explain the snout and tongue.
The more I read, the more I miss FOBS. Oh well, it's fine as long as Zell has fun with what he's doing.
Also, I disagree with the SA trend. SA's succubi lack originality and feel purely commercially designed. Nothing wrong with that, but I like SnY's feel better over SA's.
To word it clearly: the artist feels forced in SA. He does not (in the slightest) in FOBS or in what we've seen from SnY.