Just my .02 I have a couple of the EGWs but don't care for how high they sit. Hard for me to get a proper cheek weld because of how high the EGW sits on the action.
It's personal preference but I like 2 piece dual dovetail mounts or even standard 2 piece better. They give me better access to the loading/ ejection port and keeps me from having to add a cheek riser to put my eye in line with the scope. They also give me more room to adjust fore and aft without the objective bell hitting the rail. I dont shoot long enough distance to need 20MOA but if I did need additional elevation think I'd try to get it by using some Burris rings and offset inserts to get it.
More than one way to skin a cat
BHJ