Reviving an old thread... I wanted to square up the edges (with a jointer plane) on a bunch of 3/4" hard maple, and struggled to figure out a way to easily mount it on the MFT - I read in this thread (and other places) that the Sjoberg Smart Vice Pro might help... indeed it does. I added the brace on the MFT as well for a bit more rigidity, but I was pleased to see that the Smart Vice Pro holes really do line up perfectly with the MFT hole pattern. I slipped the 4 bench dogs that came with the Sjoberg into the holes (from the bottom), and added 2 Festool quick clamps on the front feet of the Sjoberg, and, together with the pair of cross members I added, it makes a decent and solid planing vice - not as good as a really heavy bench, of course - but if you don't have that...
Prior to this, I had been trying to use two Vac Sys heads to hold the material for planing - it worked ok, but often the heads would get in the way - plus it was a lot of fiddling to get everything set up (I keep it in systainers usually). This simpler solution with the vice works pretty well.
What do others do for hand planing? My Veritas Bevel Up jointer plane was very happy with this setup for edges. I have the Veritas 20mm planing stops as well for surface planing (I didn't need the whole Festool kit, so I just bought these - which seem very similar to Festool's kit).