['68OrangeSunshine]

You make a good point. I never used it for a temp probe. I have a sensor capsule in the drivers side of the head that reads out on a mechanical gauge under the dash. I disconnected the idiot light probe years ago. Not sure what happened to it.
Something pointing down inside there might interfere with the action of the thermostat too.
If it did work with both elements together, you would read the temp of the water from the radiator, and it would radically drop when the thermostat kicked in.
Still you asked a question, and it made me think of that piece.