The +1 ab bonus you get at level 8 with this perk seems to negate the effects of Bless/Aid/Divine favour potions (Not adding the ab bonus that comes with the spells, + hp and +magic damage still works on Aid/Divine favour)
Acount name: TheNightIsDarkAndFullOfTerrors
Character: Remus Blackheart
It works. Check your combat log.
I did doesn't work.
it's the same way with the self taught fighter perk
After reviewing once more, these potions do not add +1 ab even if you drink all of them thus holding back your maximum ab potential.
I suspect this happens with the Scion AB bonus as well, though I'm not sure. I've not studied the combat log after using bless/aid.
Despite my earlier statement this is indeed working fine!
Closing the thread as the matter is resolved.