PCV setup with Mopar Performance valve covers

I've got a set of the cast Mopar Performance valve covers and they've come with a single notched opening that would take a 1/4 turn oil fill cap usually. What are others doing to accommodate a PCV hook-up? My local jobber says that they can get a 1/4 turn breather that has a hole in it's top where a pcv hose/valve could go in, but I'm wondering if it's a case of drilling the blank opening in the casting for a grommet and regular pcv valve. Has anyone ever drilled/grommeted and hosed both VC's and then "Y"d them together to run into the port in the intake?