I have 105 clipless pedals on my FG but if I'm just riding with my kids to school or practice, I'll typically just wear running or indoor soccer shoes. I have brakes, we never break 12mph, and the soles are grippy enough to stay on the pedals. I can even pedal brake. But it is true that I would never go for a long, fast ride in heavy traffic or on a hilly route without foot retention.