Just wanted to post a quick follow up. I ended up in the scrum outside the customs exit. It really wasn't too bad at all. I arrived a few minutes after his flight did (it arrived early), but was there when he exited. There weren't too many people around and I easily saw him and met him right away. Eschewing the "taxi" offers, we proceeded to aeroexpress and were on our way in only a few minutes.

If I was meeting someone again, though, I would take meFIRST's advice and use the "Meeting Point" (which no one could miss) or the upstairs cafes.