Old thread but along the same line to try to give this direction.
If you fight an orc and bring them down to low or to negative, doing non-lethal damage at that point would immediately end the Ferocity or not even allow it to happen if they had not gone below yet.
You could just allow the Orc to continue fighting at whenever they were knocked unconscious equal to their con.
If they are unconscious at 10 hit points and have a 16 con? Then once they take 16 points of damage/non-lethal they fall. Thoughts?
