+1. I can't say I've ever had an FD fall off. I've had one person complain about an FD on his son's premium REI bike that I worked on some months prior at a free clinic slipping down and rubbing the crank on each stroke, forcing him to stop, try to adjust but failed, and then he got lost because he didn't print out the route directions (which forced me, the ride host to go back 3 miles to find this guy and his son). Later he apologized because his wife sent the bike back to REI to have them "tune up" the bike.

And I do carry a lot of tools whenever I ride. Even on newly built bikes that don't need them.