First, are you sure it would interfere with the push/pull. The Metz brackets mount to the left of the camera (as you hold it and look at the back); the push/pull is on the right. What I don't know is whether the stock Metz bracket will allow enough room to clear and use the KO grip.
That said, the chrome ring that attaches the Metz grip can be removed, leaving a round "rod" that might be usable with another bracket. Stroboframe offers brackets that hold Metz and other "potato masher" flashes.
Finally, I had (might still have it) a Metz CT45 where a prior owner replaced the metz grip attachment with one from a Honeywell strobonar that mates with the clip type arrangement such as used on the dedicated Koni bracket.
I guess that's a very long winded "yes".