Tulip, good point. I did ask the LBS whether I could do the exchange in their parking lot, and they said yes, that it happens all the time. I also had the bike tuned up there, so perhaps that's why. It's the same LBS that I asked about shipping the bike if I sold it online.

My reasoning was one of safety- I never meet CL buyers at my home. I could have chosen a supermarket parking lot or anywhere else, I guess, but an LBS made sense to me. It also makes sense that the buyer could have the bike checked out.