I've been a member of CANPASS Air since December 2004. I've used it 4 times since then (at both YUL and YYZ); I was sent to secondary at YUL the very first time I used it so I should be OK for my next few trips !

Most recently used at YYZ T1 this past Sunday evening allowing me to pass through unscathed as the queue at CBSA started to fill up with the arrival of flights from the Caribbean and Mexico. ^