Has anyone seen how Pre works at an airport with the new checkpoint installations?

Supposedly they save time because multiple pax can be loading bags on the belt at the same time and bag searches won't back up the entire line.

Perhaps the assumption is that the time savings will be offset by having pax do more and more unpacking: one bin for LGAs, one bin for paper, one bin for 'foodstuffs', one bin for electronics, etc.

I saw an entire lane get shut down (mechanical) in PHX a few months ago. Pax was told to take off his flannel shirt. No bins in Pre (and no exceptions), so he put it on the belt and got in line for the WTMD. As I was grabbing my things off the belt, I tried to get the xray operator's attention, because I could see the shirt had gotten hung up on the rollers past the xray. The xray tech ignored me after barking at me to keep my hands out of the post-xray 'tunnel' (which I knew enough not to do anyway).

By the time I got my things together, the belt was jammed, the line was backing up, the shirt was badly jammed and the guy who owned the shirt was standing there shirtless.