In the major cities of Canada (Toronto, Montreal, Vancouver), as soon as the Nordic model was passed after prior law that outlawed incalls and agencies (outcall always legal), the police announced no change in enforcement unless underaged or trafficked against will.
The prior law stuck down by the Ontario Supreme Court in one of the most comprehensive opinions ever since it violated the Charter of Rights based on the "safety of persons". I.e. it is much safer when legal.
Then the conservative parliament passed the basically Nordic Model. However, police realized in the major cities, this made it more risky and refused to enforce it.
There have been arrests and cases in some more conservative smaller cities of C36 (new law). I have kind of lost track, but for the cases, I recall, 3 declared C36 unconstitutional against the Charter - related to safety - and 1 case was lost.
Latest I have heard is the "Crown" has not appealed to the Federal Supreme Court of Canada (which upheld the striking down the old law).
A few years ago I had an outcall to my hotel who never showed up. We connected later and she told me she was stopped by police in my hotel parking lot. How they knew she was an escort is unknown. She was with an agency so had a driver. The police only were interested if she was a consenting adult. She assured them she was and she was free to go and see me. However, she was a bit rattled and decided to contact me later and not show up.
There are zillions of great agencies in the major cities (especially Toronto and Montreal) that have drivers and detailed bios and pictures of all the escorts. It works wonderfully and safely, and if there is ever a bad client, there is no hesitation to report it to the police. The drivers that return the gals from the outcalls call about 5 minutes before time is up and if the escort doesn't pick up or return say after 10-15 minutes they will go to the room and if anything suspect will call hotel security or the police, although I have not heard that happening. Most agencies require names and, of course, hotel info, so if any problem will blacklist the client or report to police if attacked or something, again never heard of it happening.
The result is the police go after underaged or suspected trafficked against their will and do not waste police resources going after private consenting adults.