What if a werewolf impregnated a vamp while in human form? Would the child be a werewolf, vampire or both? And what if a werewolf and werebear mated? What would come out of that union?
I'd assume the Bethesda law of children taking after their Mother would apply, although, like the Gray Prince, a child of a vampire father would probably be pale (but not an actual vampire).
The child would be born human whilst in human form but be infected with Lycanthropacy at birth, but if the mother was in Beast form whilst giving birth they would probably be born a pup (and turn human).