I have not been in SK since I got into scanning, other than flying over it at 30,000+ ft. I have taken my scanner to Ontario, Newfoundland, Tennessee, and British Columbia, all without a hint of concern. This includes being checked at security for Customs and for CATSA/TSA screening at airports. I know that's not what you asked, but it possibly talks to the situation as best as I can.
The most important thing in all my experiences, I think, is going through Newfoundland. There, they have a law about using cell phones in cars, which is about the closest you can come to the issue of operating a scanner in a vehicle. I had two scanners going and a laptop - before you give me grief, it was all on "autopilot" while I was in motion. Neither the RNC nor the RCMP gave me a first glance, let alone a second glance. Of course, I was being inconspicuous, and focusing on my driving, which is the reason behind a cellphone ban in a vehicle.
It might be worthwhile to check out the Queen's Printer of the Government of Saskatchewan.
http://www.qp.gov.sk.ca/index.cfm?fuseaction=publications.details&p=12208 is the Traffic Safety Act. Not sure if it will contain what you need, but it should get you started, at least.