I've run into no problems at all with my stainless steel egg beaters (road bike and urban fixed riding). Barring a worn cleat or twisted foot, I can't imagine disengaging by accident. But you do have to watch out for the cleat. Crank Bros intentionally makes the cleat from a softer metal than the pedal so that as things wear, you will not destroy the much more expensive pedal, though you might have to replace the cleat now and then. So, if you want to install your pedals and never think about them again, maybe egg beaters aren’t the right choice (but then again, I’m not sure what would be). If you want to do occasional maintenance and upkeep, then egg beaters take you a long way.

Been riding mine for eight months with no problems and little wear to the cleats. They’re light, strong, and look good.

Oh, and like any pedal system – at least in my experience – they’ll take some getting used to. But once you adjust, you’ll love ‘em.