I am in a similar boat to Velociraptor and have also written up my experience with the Amos Sultan Wing 5'10" 85 L (my weight is 85 kg). I am adding my thoughts there since I believe the group of folks with experience in both would be tiny; if there is even one person, I would be surprised.
The significant difference that Amos implemented in the design compared to most other builders seems to be his approach to width. The 85 L board is 18". It is a needle. I know that others have gone for 20" in their approach. Amos tends to be at the forefront of innovation, and if you look at his team riders, it's not a surprise. The Sultan Wing was influenced by Adam Bennets. Hence, the width.
The only single drawback of the board is that it is a challenge once the water state is unruly. I have found that to be from about 25 knots. I had some long swims in the early weeks. Now that it is coming to three months with the board and countless hours under my belt, it doesn't bother me too much. I have used
only this board since buying it. It's fantastic in the waves and, of course, flat water. It excels in DW wing conditions. It's easy to carry (I carry it with the board on my back with the mast in front of me). I ride strapless and would build it without straps next time (the weight of my board is only 5.3 kg, though).
The many advantages are well described and I will not delve on those. Like
@BWalnut, I think the shape is here to stay.
Ideally, I would like to compare my board to a 95 L, 20" wide at 6'. I think that will give it some extra low end and make it slightly easier to get going in light wind. At the other end of the wind range, maybe I should also use my 40 L sinker a bit more when the wind gets to beyond 25 knots.
There is only upside in this approach to board design in my opinion.