Well I don't accept the esc stance or the difference between switching off or disconnecting. For the majority of cases, something that is dangerous is no longer dangerous once you are aware of the danger.
For instance , you do a PIR and discover all class 1 light fittings outer casings are live. They are out of reach, so although potentially dangerous, they're not if you don't touch them. But some of you would scare the customer and switch off the circuit, so what happens later that night when the customer falls down the stairs or knocks over a candle and sets fire to the house. You removed one potential danger but in doing so have created others.