Think about having a switch on a laptop. And if the switch doesn't just kill power (which it shouldn't to safely shut down), then it shouldn't be a switch it might be better as a button.
P.S. Yer 'bout to miss your flight."
I had a Dell that once got stuck and the usual long press of the power button was not switching it off (probably it was sw/fw controlled). I had to take it apart and disconnect the battery, otherwise I would have lost my working day waiting for it to die.
Anyway, I'd rather avoid accidents.