While I agree with the sentiment, having an insured paid professional in the house is not the standard practice in my experience."If the bit involves *purposeful* danger (everything on a stage *can* be dangerous), then you only do anything related to it if there is an Insured Paid Professional on the stage with the effect at all time. Artistic chain of command is not permitted to violate this rule."
[ 'Purposeful' danger involves any weapons, simulated or otherwise, fire/pyro, any rigging/flying including simulated hanging, and any kind of fighting. ]
When we hired ZFX to fly a performer, the ZFX employee trained our folks and was not there for the performances.