I don't know if this is a conicidence or not, but I booked 2 first class tickets to HNL(connecting in SEA) over the holidays and received a call from Alaska customer service. Apparently they had a schedule change and downgraded me to coach on one of the segments. I was really ticked off and thought it was becuase of this companion cert. Agent was very nice and moved me to an earlier flight. She even offered me 30K miles for the inconvenience. At least I got to squeeze one last perk out of AS on my last companion pass ever.