Well, I don't actually count them, but if I walk down a heavy bike traffic street (and I do, regularly), usually up to 20 riders can go by within 10 minutes. For a 30-40 minute walk down that same street, easily over 100 riders pass by me on an average weekday, and even more on weekends.

Obviously this isn't representative of any reliable statistic. I'm just saying that my experiences around here are that mixtes are very easy to find in used bike shops, often sold at considerably cheaper prices, and the majority male bike riding population here don't seem to like riding them.

Drop bar bikes in general aren't too commonly seen in Toronto other than when the spandex warriors come out on weekends. My guess is that road bikes are considered more valuable and aren't used for regular commuting. The vast majority of commutes are hybrid bikes and cruisers. Bike thievery is a major problem here, of course, as I expect it to be for most major cities. Perhaps more people should invest in mixtes for their commute. After all, not even thieves here seem to want them!