I just received my Global Entry sticker and authorisation today at Schiphol Airport (FLUX Alliance, ie. Global Entry and Dutch Privium). It was painless. The immigration officer just asked me if I had any criminal convictions or customs offences (obviously not) and told me how to use the machine, making sure to remind me to queue-barge at any available opportunity and to show my sticker. Looking forward to trying it in practice, although I will no doubt be self-conscious the first few times I do it. Interestingly, she made it clear that if I was just bringing back some chocolate or a bottle of duty-free booze, that I should not mark that I am carrying food. Then a nice chat in Dutch with the Marechaussee official about iris scans (we were talking about the UK Iris programme -- apparently the Dutch one is more reliable, which I would find easy to believe based on experience), one more payment to Flux Alliance and off I go. The Privium lounge at Schiphol is really very nice, stylish, something to see. I think it's a good thing that Dutch passport holders can take part in Global Entry and that US nationals can use Privium and it will be interesting to see how this programme is expanded when other countries are added in 2010.

ps: I heartily agree that Global Entry should also be brought to Denver.