There can be exceptions to anything but a Pro knows (or should know) to place his faith in the house. That way the best possible group balance will be out front (where the people paying the bills are).
In the last few decades of high SPL PAs anyway.
Most clubs around don't provide 'house'.
The most earth shattering rig I've heard was a 410/118 (only the vocals went through the pa). Almost made me soil mysef