I like chain keepers..........they are like insurance. Even if something goes wrong, it's not going to go wrong. Normally I use an N-Gear Jump Stop, but for some reasons (including the locations of bottle bracket screw mounts), it simply will not fit on this frame without interfering with the derailleur cage or the frame. People using a triple absolutely should look into some sort of chain keeper that catches the chain and deflects it back on to the granny before it falls off. Even if your derailleur system is working perfectly, eventually, you will drop a chain and scratch the paint.