i don't know how it is in philly, but in nyc, the sexy/punk messenger on a track bike is the minority of the bike messengers.

plenty of those dudes rolling around on crusty old bargain basement mountain bikes look like they're more than capable of stealing anything that gets in their way.

not to generalize of course, but just pointing out the fact, despite what some people want to believe, that bike messengering is not "owned" by the track bike riding punks.