I understand what you are getting at. I actually came to similar results in the past, but for other reasons. Or by other means, by thinking about curves, overall contrast as well as local.
One when pushing keeping the speed constant to get a quicker contrast increase and to get a bit more off the toe as stated. I agree also about when pulling a film.
However for me, my taste I prefer a bit more dense shadow detail when pulling. Makes me feel more secure and if my shadows are a bit more dense I can manipulate them a bit afterwards
Basically meaning a selenium toning to strengthen the negative just in case something goes wrong.
I like to keep a backdoor open.
Certainly I will try this out the next time I am in the field.
This is all a very interesting thought.