i haven't taken iah-ewr yet, but i did just get off of iah-lga about an hour ago and when they called to board elites, what looked like half the crowd filed in line. it was also a dingy old 737-700.
funnily enough though, EWR-LAX was the first flight i took ever since i got my silver back and i was able to get an EUA right then. on a friday early evening flight no less.