Run a brake AT THE VERY least for the first few months, lean how to skid no matter how fast your spining, as a recent convert back to brakless, after putting one on not long after i got my bike, My reasoning is that i ride that a ****ing idiot in traffic, taking the brake off has humbled me a little bit i take my time look far ahead look over my shoulder, watch for pedestrians. its proably less safe but for some reason i Feal safer. also my last to falls where because of my brake. sooooooo anyways get a brake!