Sounds very sensible to me after all a circuit breaker is a mechanicle device as well as electrical and its nice to know that after twenty years of sitting in the on position it can actually move to off...
Only the other day came across a standard 300amp fuse switch that could not be switched off. No bad contacts just settled into the on position and did not want to move. Had to spend a full half hour coaxing it to operate. In an emergency situation that would not have been good. Yes Sir Arc, Im with you shed some load and do a functional test every now and then.