Originally Posted by LupineChemist

Security can be a mess, fast track is great if you have it. But that's regardless of Schengen or non-Schengen.

As far as passport queues. Seem to be fine for EU but I have a thread here showing a couple weeks ago the non-Schengen line going all the way down to the train platform winding around. They had to turn off the escalator for them. That was probably exceptionally bad, though.