Sorry too, but I've travel internationally at least 10 every year and have had GE for about the past 8 years arriving at different US airports (LAX SFO DFW IAD JFK EWR MIA ATL and yes even CLT - levery one of them have had a special GE "Customs" exit line. It may not have always been open and/or the queue may not have been short but there's always been a GE sign pointing the way.

Regardless, OP never inquired about CLT but rather was inquiring whether GE shortens the procedure for "checked luggage" at whatever airport he/she will be arriving at. The answer is not by much - he/she will still have to wait for luggage to be off loaded from the aircraft before they will be able to leave the Customs Hall ( using either the GE exit or the regular exit).