I have been wanting to do this a very long time. Adding a power shutoff switch to the garage door openers. I dislike and distrust the openers' built-in disable switches. In fact they have the tendency to fail and cause the light to turned on. When I am away for extended period of time I want to be absolutely sure they will not open accidentally and there is no substitute for removing power entirely. To do this I have to unplug their power at the ceiling height which often is too painful with a vehicle parked under under.
