I always bring a backpack with me, and wouldn't mind bringing an extra pair of normal sneakers, so the walking thing isn't that big an issue.

TT what clipless system do you have on your bikes? SPD? SPD-SL? others? I've been looking at the shimano PD-R540. Also looking at some decent shoes, but most of them are SPD, not SL, so there's a thought. What specific pedals for each system do y'all use or would recommend?

And well... this is NYC, so there's plenty of stopping and going. So it makes me wonder if clipless is a good idea at all.