I have had no problems with valet checking my carryon when the overhead bins are full. Both regional flights and larger planes seem to regularly arrange to valet check bags. It seems a problem of semantics to me. Why do all airline workers and flyer talk regulars expect the world to understand their vocabulary? Leave it on the jetbridge or at the base of the stairs and pick it up when leaving the plane. What am I missing? This is a regular practice on most of my flights.