I use Candy SL eggbeaters and they effing rule. Accidentally clipping out is only an issue if you have no float, your cleat is worn away completely, or your pedal has many, many miles on it. Even if you do manage to unclip accidentally, it's no different than breaking a toe strap or a clip except you have a much better chance of getting back on the pedal or stopping with your other foot which is likely perfectly engaged. I would say balance is the key when accidentally unclipping.