Although I had other instructors before meeting them Anton Gazenbeek & Sergio Segura were my 1st Tango Teachers. Anton did recommend this as an exercise. It was one which he honed because when he went to Argentina to study tango he was not allowed to do anything but walk for about a year. I never personally used the method, but I was struck by the comment of a student who danced with him, she said " it was being led by a ghost" meaning she felt no force or pressure. They were also advocates of men learning a lead by 1st learning to follow it.
Have you ever really tried to dance or train with sticks? I did, but I got the idea for training women embellishments along the men’s leg. Men seemed to be bored pretty soon when not challenged. Therefore, I aimed at keeping them occupied with a separate exercise and give the ladies a broomstick as replacement. This idea never made it into any real lesson.
First, on a hardwood floor a broomstick’s end is extremely slippery. In contrast to a human leg it will glide to the side once there is the slightest force sideways. This might be remedied by fixing a shoe to its end. But now you got a bulky load of sticks with shoes on them, which handle like some awkward giant pendulum.
Second, it is very tempting to cheat. The stick will land wherever you guiding hand points it. A little flick with the wrists and its position is corrected by a couple of inches. When things get really wrong, you can simply drag it along with you.
Concluding, I found very little resemblance between human dance partners and sticks. Thus, I kept on looking for more effective teaching methods.
Nevertheless, I assume there is still plenty of unused potential for shows in those sticks.