Hi Craig - from what I saw, most people still don't carry anything. My snippet was from an aboveground subway stop - it was daylight, but the stairwell down was pitch black (something like six stories high). If I was to guesstimate, about 1 out of 10 people had a keychain light, Photon-size or thereabouts. I had an Arc LSH, so I was shining my light from the bottom of one stairwell/escalator to the top of the next one, and another guy walked by me and posted himself at the top of next stairwell and guided people down with light. That was totally spontaneous, I have no idea who that guy was, but he took on the role to help out because he had a flashlight.
So yeah, at least some people have them - and soon a lot more will. I have several friends looking to add some flashlights to their purses/pockets now.
Dave