Dumervil is a pass rush specialist ... kind of like KGB. Could be very helpful, but we can't pass rush both OLB every snap...
Which OLB would be dropping back into coverage? Dumervil or Matthews?
Unless the Packers stay in the nickel 2-4 (with OLB moved up) which is basically a 4-2 with stand up 4-3 DEs.
And the Packers could make it a 4-3 with stand up 4-3 DEs with Dumervil and Perry at the DEs with Matthews at LB.
But they would have to stop the run out of that... which they haven't been able to do even in the 3-4 look...
It could work... but they would need to another great OL clogger to go with Pickett (Raji can at times) ...
And someone to help Dumervil against the run.
Most likely not gonna happen...