The slippage from stop or market orders is easily guessed but I assure you that there is also an order limit one and it is simply related to failure to perform ... Waiting to be served and not being (only in winning operations of course) can lead to remarkable lost profits ...


On the FIB the event would also be rare (while it is very likely to happen on markets with large volumes like the miniSP500 for example) but I do not think it's really worth the risk.