Agreed, it's fantastic when you get to use it.

Used it connecting to YVR from NCE in June, and was very fast and allowed me to make a very tight connection (less than a minute to get through with Nexus).

Thought I would get to use it coming back from PUJ in July, but was sent (along with seemingly the entire plane) through regular customs, baggage claim, secondary inspection (must have been looking for something), and back through domestic security.

Comparing the two a couple of weeks apart, it makes you appreciate the new OSS at YUL.