We've got a venue locally where they insist even the PA, which is 10kW goes through the limiter, which is set at 92dB, c weighted, and the mic is right by the stage!
The real problem is that the limiter itself is only rated at 13amps - i.e. a max of about 3kW. So it's possible to fry the limiter with the PA and a Kw of backline plugged into it -these sort of things worry me being an electrician!
And being c weighted means it's biased toward bass frequencies, so it's very easy to set off. And if it does go off, that's the whole PA plus backline to be damaged when they come back on again...
However, there just happens to be a large supply on stage designed for lighting which isn't through the limiter, so we use that... Unofficially of course.