Bang for the Buck is hard to guess when they do not list a price that I could find.
They put a lot of effort into videos, yet did not bother to add a pdf or 2 about operation? Seems a little fishy (attempt sail boat humor).
Nat Semi sells parts based on their pdfs. Could be it is vaporware or prototypes.
Lets them adjust the price based on projected unit sales, or abandon the project.
The videos sort of makes me think it uses fet circuits as bypass diodes.
The videos also show an advantage toward the array with the do-hickeys installed.
At 1:55 it is fairly obvious the other array has more cells and more acres shaded.
It may be more obvious at the 15~20 second mark.
Going out on a limb with a WAG: It will have no value in a 12V or 24V system unless the system has a MPPT controller with a considerably higher voltage PV input than the battery bank.
G-