I haven't seen a JW go from door to door since I was doing it myself - nearly 3 years ago. I've seen a few during the summer doing "street work", meaning they were walking along the sidewalk with magazines rolled up in their hands. I didn't see them actually approach anyone.
Bottom line - if you want watchtower magazines you need to go to the nearest Tim Hortons and approach anyone wearing a tie to ask for them.
W