Went through YUL today, and no kiosk (just Nexus). Didn't bug me, there was literally zero line. Asked the very pleasant CBP agent about Global Entry, he sighed and said that "every other preclearance station has them except us," and that it was some sort of logistics issue with the airport.
He clarified, however, that if you have Global Entry, you can go through the Nexus lane, and just tell the monitor that you're GE, so you'll get to jump the line (although, of course, have to use an agent rather than the kiosk).
So, while no terminals, certainly >90% of the benefit...