I can't really see any reason why it shouldn't work. The picture you have there kinda looks like there isn't any clearace for the stradle wire, but they presumably designed this unit for cantis, so that can't be an issue. With the pauls you use a wrench or fingers to hold the oblong nut vertical (I have neos I guess is't just above horizontal on the touring canti, and you cram the allen bolt on tight. After that it rotates on the pillar. It probably isn't an advantage to have a "washer" back there, but it should work.