I have a number of them on my layout. Most are in low traffic areas, but I have one that is in a critical spot. Lots of trains have run over it, and never a derailment. All of the traffic goes through the smaller radius facing point, around a reverse loop, and exits the larger radius trailing point.
The switch doesn't even have a motor on it. Because all the flow is one way, it is controlled by a piece of piano wire acting as a spring. It is located well under the layout, so if it was a problem, I would change it out fairly quickly.
