This plate is a heavy duty accessory to add to any bench, figure out where you want it, put spacers down and screw it in place. As long as it's bolted down with heavy enough bolts it will hold more than enough down pressure for just about anything you might need.
From experience I would not recommend permanently mounting it to any one spot unless you're positive that's the spot you want it. And if you do Route it in place, don't glue it down. If you've got an MDF table top it's easier to fix the holes, than it is to fill in a routed out spot.
I had this plate glued and screwed in place on a 36" x 48" MDF table top, I figured out fairly quick that it was pretty useless where I had placed it, so this review is from personal experience.