Jumpseat manual 1.1.10, paragraph S, “Allegiant pilots and other flight deck-elegible personnel may occupy cabin Jumpseat’s. Cabin jumpseat policy and personnel eligible to use cabin Jumpseat’s can be found in the Flight Attendant Manual (FAM).”

According to the flight attendants that I had one day when this come up OAL pilots can occupy our Jumpseat. We made a southwest pilot happy one day.