The idea of a one board solution is good but having seen one I'm not as convinced. There are about 40 screws on this thing (plate, foil, straps, fins) all in. The weight you'd save on a one board solution you'd lose by taking an electric screwdriver to put it together and take it apart.
I'm just too lazy for that
Seems like a good set up though. Just wish it had less screws to convert it from foil to skim.