Here's Rome response for using their bindings on the Channel. Wonder how secure this way will be and how they screw down the binding:
I have seen some riders using their regular 4x4 disks set at a 45 degree angle, and using the two mounting holes that are furthest from each other in the ICS system. This must work since they are riding this way, but I cannot recommend doing it. The bindings are made for using four mounting screws a piece (or 3 on a Burton board) so I can’t guarantee that two screws will hold a binding totally, and securely to the board. You may encounter some flex, like toe or heel lift, if you try this mounting setup too, but I haven’t tried it myself, so I can’t say for sure. Let me know if it works out for you.