Alex, that is a pretty cool jig for using a MS to cut a steep angle. I have always used my TS for these with a tall sliding fence on the saws rip fence (similar to a tenon jig). Get the blade right, then the only issue is fence positioning, and like you, a test or 3, and you can clamp them onto the jig, and slide the works through. Either can get messy if the pieces you are cutting become too long, but theoretically your way could be stretched a lot further than mine, Using proper supports.