After The Fall
Although the clergies of Kosto and Armo are separate, they are expected to treat each other as brothers and sisters. There is also thought to be no shame in transitioning from one cult to the other: sometimes clerics of Armo find they have run out of mercy and join the priests of Kosto, while those few devotees of Kosto who live too old to smite the wicked often retire into the ranks of Armo’s priesthood.
It is also not unknown for devoted followers of one brother to momentarily exhibit the traits of the other. These cases are rare, and are usually not considered ethical or moral violations as long as the precepts of both brothers have been upheld during the event.