I have not heard of these systems or these companies so I had to do a Google search. you are really thinking outside the box with these.
they certainly look like they have high-end construction. I hope somebody can chime in because I am somewhat interested from a techno geek standpoint. Personally I have not found enough performance drawbacks with my eagle drive train to be of much use in an evaluation myself but I am curious about a terrain or situation where this would be better
Just an opinion but it would seem the drag from the high pivot set up would negate the possible benefits of this belt drive drive train