Australia recently joined the GE program on a pilot program bases. As luck would have it, my application was approved just over a week ago on Friday, and I was flying BNE-SFO 2 days later on Sunday. I only had a relatively short connecton (<2 hours), but decided to try for an interview on arrival.

The main interivew on arrival line (counter 4-ish?) was empty, and the CBP officer processed me into the country and then sent me over to line 35. He confirmed that at that point I could bail and just enter the country if I wanted to (eg, if the wait was going to be too long). When I got to line 35 there were 2 CBP staff doing the interview and only 1 person in the queue in front of me. Less than 10 minutes after walking off the plane I was being interviewed, and a few minutes later I was approved and on my way.

By the time I left there were about 4-5 people in the queue, so it's possible I was a little lucky...