What an awesome idea. As long as one has the sliding table or table saw with the slot this looks great. I've never seen clamping both the front and back of a workpiece before and would presume it could cause problems if it moved, and the offcut is trapped between the blade and fence, but from your video and another I have seen it appears a great way to secure timber and get a repeatable small offcut done quickly and easily. I'm keen on trying this at some stage. I'm surprised it isn't used more often.