Right on.. Dylan was a summoning fiend at Talamania, and considering he only read the book on the way there, is a Chronopia prodigy. Next year I won't be worried about teaching him, just trying to survive!!
So, that being said, the same cat who sculpted the Liches for ZN games should give some thought to summoned undead, and I bet Muller would sculpt one hell of a demon, if Silverback wants to farm that out.