I actually got to demo the original pair put out by HO two summers ago! At first I was super stoked on the idea and couldn't wait to give it a try. Unfortunately was forced to use a waterski binding that has little to no support behind your calf, which makes it near impossible to ride switch or land switch behing a boat. Also airing off of a wake at an angle is an issue because your feet are never popping at the same time. This sport makes sense in a cable park but needs to develop a boot that more resembles a ski boot.
This is a great thought, but needs more development in my opinion!