Cops still drive around with their radar turned on. Also, you'll see a cop parked on the side with radar on as well, once in a while. You are correct that BC consists of a good amount of laser, but is mainly on the streets (standing speed trap). On the highway though, radar is still being used prominently.
For the Vancouver people who go to the states (Seattle), 95% of the cops I encountered on i-5 are all K band radar. So if you are going to the states, _always_ go with a detector.