I would doubt it as many on the forums aren't too keen on suites.
The other point is since it is a suite then it will have a resident anti-virus and this would/could conflict with avast, being a resident AV. So you would have to do a custom install of ZA ISS and ensure the anti-virus module wasn't installed. If that can't happen because it is integrated then it would be a bad idea to install it at all.
Not to mention this will be a paid for option so those using the ZA Free version won't take it up (I believe).
I'm not to impressed with the current ZA firewall free or pro and it doesn't do well in Matousec firewall tests. See
http://www.matousec.com/projects/firewall-challenge/results.php. So I personally would wait until it gets some time under its belt and see how it does in these sorts of firewall tests.