No, it won’t – the hole drill pattern is different for the death grip. You could probably redrill it. I’ve drilled plastic seat fronts to fit on the SW CF base where it used to have a death grip.
I looked at the pix on the Wallis Designs site, and it looks like you could make a mount similar to mine that would work.
If weight is an issue it would be easy, and probably cheap, to have one made out of aluminum, and welded. Mine is heavy, but solid. I’m in no hurry to replace it.