interesting, are these bike to be sold or personal use? details.

as for me:
I've had a foul weekend and am having a worse week. The best part of my day is when I ride into work in the mornings. An almost regular occurrence now; I see an older guy riding this bizarre single speed conversion using an old busted derailleur as a chain tensioner. He stopped me the first day I saw him at the Castle Frank subway station, he inquired about what gearing I was running, so we talked about our bikes for the duration of the red light, and that was it, he told me to 'take care' and 'have a good day'. I've seen him about 4 times now since (same route, not always at the same spot but I gather he must live near me), I usually shout "hello" or "morning" at him and give him a big wave as I pass by. It's probably the most pleasurable part of my day, once I start dealing with the *******s at work it's all downhill from there. He's definitely not a wealthy man (might even be homeless or was recently homeless and his working his way back up), but he seems pretty happy, and that makes me feel happy.

I think he's a messenger, pretty old beat up bike, he has one of those odd red canvas packs, two straps, (they look similar to trash picker type of bag worn on your back) it's large capacity, and has one big flap on the top to get into it. I've seen these things all over the city, it's like some sort of budget messenger pack(?), anybody know what I'm talking about?
I've obviously never thought to actually stop and inquire about these things with the guy himself...