It is really finicky to be honest. I think you can only utilize when a guy has a decent WE going in. It wouldn't work on my guy with 13 WE. Also it doesn't just keep going up. So I'll use Hall as an example.
717 would go to 655, then back to 717, then back to 655, then to 717 and then like 657, which in turn would boost his WE by 2 on a switch. So once the increase happens it tends to be that a switch keeps it at 657; however it can increase, but also decrease. I just kept playing around with it on my cell phone. You can go negative as well. I had it where Hall went down to 714 and -3 WE. It really is a crapshoot, however it could potentially boost a guy from sub 30, to over 30.