I've been in Montreal for a long time and yes: they still use lots of rotators. They are steadily switching for LEDs. Most of the bars are still MX7000s, and the inboard fast rotator and rear incandescent flashers are now LED modules. Still the outboard rotator remains.
As lafd55 said, they are using some code 3 LED bars, but the transition is a slow one.
As for ambulances, they now are pretty much Whelen pods on the rear cab and lightbars are pretty much gone.