Yup, I have that wasteboard from them, but I had them make mine with 1/4-20 threaded holes since I had so many fasteners in that size already.
I love it. @Vince.Fab almost has me convinced to buy some 6061 aluminum stock and make my own clamps since the ones I have been using are made for t-slot, and are not adjustable as I’d like them to be.