For a bit more you can get one of the Armor clamps. I experimented with one in my local Woodcraft and think they could be a winner! As an added bonus they work in both the 20 mm system and in 0.75" dog holes found on a regular workbench. https://www.armor-tool.com/product/self-adjusting-line-dog-clamp/
I bought four. THeY seem to work well in MFT and on CNC. THey do push sideways. I love plastic on cnc as it does not destroy router bits if you make a bad move. Kreg plastic is fine with me. metal would be far more expensive. Think Woodpeckers. Woodpeckers needs metal for the precision. Kreg does not on their products for the most part.