Catching up on my FT reading, I saw that some *Gs had luck getting choice seating on US for free if you call. Just called and agent was not familiar with the policy but went to check and confirmed that yes, *G does get the choice seats for free. She checked for 3 upcoming itineraries and sure enough, got moved to exit aisles where available, and front of the Y cabin otherwise - for free. More points for US!