we all hope that he becomes one day available for everybody!
I wont need it in the near future for sure as there are so many other things you can do to improve your photography till someone gets to the level of Alex Mustard and need this port.
I am sure you will get better corner sharpness, a new toy to play and that is all. I would rather put this big chunk of money on a workshop or a few diving trips.
Do not get me wrong if this port is all you need go for it.