*anit-clipless zealot chiming in*

I ride pinned BMX pedals on the franken-Breezer xtracycle... you want a pedal that you won't slip off... go with pinned BMX and your foot will not move.

I have cheapo nylon platforms on my recently converted to single-speed Steamroller, boy what a fun bike.

I use MKS touring pedals, with... ahem, Powergrips, on my fixed gear bike. The powergrips are more of a retention device to keep feet on pedals when spinning really fast downhill.

All these bikes see a lot of service in the city. My commute is only about 7-8 miles round trip, and I often hop on and off the bike throughout the day to run errands. I just can't justify wearing special shoes to do all this, even though I have used, and like walkable SPD style mountain shoes and pedals.

This being said, SPD pedals do reside on my tandem, and my LD road bikes.

Use the right tool for the job. I imagine if my commute was, say 30+ miles round trip, I'd probably have a different approach. But even then there really isn't any reason why you should think it is a requirement to ride clipless just because you're putting on longer miles