I really would not encourage anyone to be sticking a screwdriver or similar into a live socket, earth or not!
However, I've found the weakness in my AKG bug was the inputs from the amp, the jack gave up after around a year and the XLR is on its way out too, mind I do have a hefty jack to XLR convertor hanging out of it!
They are very useful for allowing you to mix the sound when you don't have the luxury of a sound engineer.