I used GE for the first time on May 14th. Flew CO35 from LHR to IAH. Last time I flew international into IAH was in 2001 and I don't remember the walk from the arrival gate to the immigration/customs area being so long. I think we had to walk a good 15 to 20 minutes.

They had a sign pointing to the GE kiosks located at the far end of the hall. There were six of them (2 banks of 3). I went through the entire process, but it got stuck on the last part. After 2 minutes it finally printed a X receipt. Turns out all the machines were doing this to everybody. They opened up the last two desks right next to the kiosks and were processing GE users. The CBP officer asked where I was coming from and how long I was there and then stamped the back of the receipt.

I then went and picked up my bags which were already waiting for me. Proceeded to customs. They had a separate GE line. The customs agent held up the non-GE line and took my receipt.

Overall it was a good experience. All of the CBP were professional and took care of the GE users as quickly as possible.

GE would definitely have been worth it because my flight got in late from LHR (some idiots decided they didn't want to fly after we had already pushed back and had been disconnected from the tug) and I had to get over to terminal A for my flight to CLL... but it turns out that I would be waiting at IAH for 10 hours due to severe weather.