Yes, the ankle attachment with support at the knee works really well to help distribute the load. This provides maximum comfort with more or less constant and controlled traction whether sitting or standing.
Much if not all currently available ADS devices are practically useless in my experience. For the most part being uncomfortable to wear at the knee with non-elastic webbing with inferior plastic hook, elastic cord and cheap plastic stopper for adjusting the traction.
I don’t understand the lack of innovation. Innovation in this case being the simple functional aesthetics that comes with application of good design principals.