And, bringing the discussion full circle to my original question, pushing PCC shooters to uncase at safe tables would promote leaving PCCs stacked up on safe tables ready to unbag (or already unbagged), potentially out of sight of the competitor. Given there are no rules on leaving a gun unattended this would be legal per the rules, but have some obviously undesirable consequences.
There is nothing wrong with safely unbagging a flagged PCC into the berm, nor is there any time limit or distance defined in the rules that would limit a shooter from arriving at a stage, dropping their case by the berm, unzipping it, and placing the PCC on top of the case with the flag visible, even if they have the entire squad ahead of them in the order.