camera goes un-detected from the Audio Engineers I work with. Trust me, they would let me know if they heard it.
True, but they're using directional mics and are only interested in the sound of the actors/action and
they know what ambient noises will be lost when the project is dubbed. Set photographers are always a fair distance from the mic beside or behind the shooting camera, on the wrong side of the mic's sensitivity.
If you just want a camera no one will hear, even those standing right beside you, the Jacobson one might still allow too much sound out by default.
The quietest system I've worked beside is 5Diii in quiet mode inside a Jacobson, a D800 inside is still audible.