As a few others have pointed out , you don't need a clearance for a matz penetration, you can sail through if you wish. I think common curtsy prevails you at least ask them and if you are Squawking a designated code then I am sure they have an eye on you.
I've had this a couple of times in requesting a Matz penetration with no reply, passed through and then was handed off by the Matz controller with out any complaint. I know the feeling though of being a bit unsure especially if you're flying an airfield with jets.
In all honesty though if you ask once and then call up to confirm and still get no answer then you should be able to pass over head, but there's the old addage of never assuming! i guess it would be nice and certainly, reassuring to get a clearance but they are unfortunately not always forth coming!