TPE-SFO (Polaris seats):
Just before boarding, more than ten non-rev passengers clear into J, including some odd-numbered window seats.
GS preboards, seats himself in 5A.
Passenger who lined up in Group 1 boards, brandishes her BP for 5A, says to seat-occupier, that's my seat.
Fake-5A claims he thought he had sat in 4A.
True-5A says no, gestures to placards.
Fake-5A says OK, hesitates, and then asks if True-5A wouldn't mind swapping since 'his stuff is all there already'.
True-5A explains the difference between 5A and 4A, including that 5A has windows.
Fake-5A stands up, reaches over to close the 4A cubby door and show that 4A has half of a window.
True-5A says something in a dissatisfied tone.
Fake-5A waits.
True-5A says nevermind, accepts swap.
Fake-5A says, Are you sure?, It's an expensive seat, I want to be sure you're happy.
True-5A wants nothing more to do with Fake-5A.
The poacher's appeal sounded disingenuous, and I'd imagine someone flying enough to be granted GS status should be familiar enough with aircraft to find the right seat. I would have liked to have said something to put things right, but couldn't think of a way to insert myself into the situation.