I cut a lot of 45 degree miters on the old MF table. As much as I love the system, it has three problems:
1. Saw is unstable when in the 45 degree position. I give Festool a pass on this because in every other respect it's great, and I suspect it's a design compromise which could not be avoided in the interest of light weight, which is arguably more important.
2. Saw must be removed from guide to change workpiece. Gets old fast.
3. I swear if the little ribs on the vac hose bind against the guide or the table edge one more time I'm going to go very non-linear, and not in a nice way.
You just park the saw at the far end of the guide. The top piece of the jig solves problem 1 and the bottom piece solves problem 2. Passing the hose through the clamp and looping it to the left ensures that it won't bind during a cut.