The top clamp, the one with the thumb screw or the Quickclamp, has a recess in it that a screw, on the top clamp holder screws down into and holds the clamp in place. The clamps for the bottom that does not have this nor does the bottom clamp holder have the screw. The top clamp and this screw, for me at least, are part of the tensioning. Anyway, you cannot just switch the steel camps, they are not the same. It would be more complicated than that. Not saying it couldn't be done somehow, just saying it is not just a switch of the clamps.