I am also looking for top tube storage, and considering the torhans bentox and the ATTK, but I want something which will blend with the tube without a big gap or sticking out the sides, if neither one of these works I will probably 3d print my own.
Probably not the solution you are looking for to clean the cables, but an Alpha X and Di2 will do wonders cleaning the front end.
Probably not the solution you are looking for to clean the cables, but an Alpha X and Di2 will do wonders cleaning the front end.