GE saved my butt at EWR a few days ago.
Late arriving flight from MAN (thanks, UA!!). Lines were massive. Walked right up to a Kiosk and after fighting with the "improved" fingerprint scanners that DON'T WORK (CBP, is anyone working on this problem you introduced??) I whizzed through. Got to the customs station and lines were again massive. Don't know if I was supposed to, but saw "GLOBAL ENTRY EXIT" sign with an arrow, cut in line and got right through.
Made my connection to ORD with literally one minute to spare, lacking GE I'd never have made it.