If you clank something hard enough to break that pan, you're gonna know it. If it happens, and your oil pressure drops for a few seconds (5 or so) before you shut it off, it'll live. Think about how the lifters rattle after an oil change before the new hit of oil gets through the motor. And the turbo would be fine too, as long as it wasn't at 60,000 rpm with no oil for 10 seconds...lol.
I suppose you're right. All valid points. I'll just throw a kill switch onto the dash somewhere.