Interesting, but
Interesting design but probably not going to go mainstream unless someone like Shimano copies/steals the design. My first thought was is it possibly to get my calf eaten by the upper chain ring. Also, how is the chain wear? Can really tell how much angle it has from the BB chain ring to the upper chain ring. But, yeah overall it is in interesting design. Good to see a young guy use his creative talents and engineering skills for this.