lol.. only in the most practical sense of the term. Maybe if I had a better bag it wouldn't matter as much, but I really don't like carrying more than a few lbs over my shoulder.. and attaching a lock to my frame would a) uglify it, and b) make the occasional Queen St. bridge / Riverdale park -> Don Trail portage even more annoying (metal steps are slippery when wet!)

Shapelike - thanks for the update.. I guess I'll check with shops again in a few weeks.