RE: Demos and instructional's.
I have never seen demos, tutorials or instructional's done if NOT with compliant partners.
They are not competitions.
Ever system of H2H, sport or otherwise always teach and demo with the "attacker" being compliant in one way or another.
The Dog Brothers are a great example of how it should be done.
They teach it ( complaint) then they fight with it.
"See it taught, see it fought".
That is how it is done.
But instructional's and demos are almost always compliant.
Psalms 144:1
Praise be my Lord my Rock,
He trains my hands for war, my fingers for battle !