In animal sacrifices the priests usually get the meat, so a skillful butcher is needed. But iirc, the Peaceful Cut makes the spirit born again on the lozenge, so it wouldn't make sense to use the rites when sacrificing if you want the gods to have the animal's spirit. And Praxians don't use the skill in their funerary rites when they kill the deceased's mount, so that he gets to ride it again in the afterlife. My guess is that if you used the Bloody Cut when sacrificing to Orlanth, you'd get smited with Thunderbolt.