What I've seen on most of the YT video review of quad sticks is that they are shooting calibers at or below .300, often time with a suppressor. This means they have little concern for the rifle forend loosing contact with the front rest on the sticks. So they can grip the forend of the rifle or simply hold the sticks. BTW - Holding just the sticks is NOT the proper technique, regardless of caliber.
If the added factor of DG caliber recoil is added, proper technique becomes much more important. This means holding the forend of the rifle and pulling it back into your shooting shoulder. This is the first video I've seen that addresses this concern and actually shows how wonky quad sticks can be under the recoil of a DG rifle.
I'm not sure about others, but I really don't want to deal with "maybe the sticks will do this" or "maybe the sticks will do that" when dealing with DG. Not sure how much practice it would take for me to KNOW that I can make a good follow up shot from the sticks if needed.