The Revolution bikes are mid drive. Maybe in the past they used to be hub drive, I am not sure ...
Have a look here .... https://hpcbikes.com/collections/electric-bikes/products/revolution-m
From efficiency standpoint, wouldn't the losses on the Schlumpf be notably lower? I mean when I talked to people who make Kuberg Freerider, they spoke at length how a wrongly tensed chain can easily rob you of power. So I am thinking two chain drives must be paying efficiency price somewhere? Also, nobody else has done this sort of dual drive eMTB, at least to my knowledge. If the LMX guys figured something others have not, this could easily explain that and it would be great for them obviously.
I am just trying to figure out, if both bike could be had for the same money, which system wins?