It's a long time since I used Awesome Mod, way before Supernatural came out so I'm afraid I can't help you there.
It's my understanding you need the personality modules for Twallans to handle occults but even then from what I've read it doesn't turn townies like EA's does.
Could you not seed the town with occults via the mailbox and testing cheats then when they breed with Twallans story progression they would produce occult children, I've used the mailbox before now, unlike story progression it changes all age groups, even toddlers.