Is "what" compatible with any ABS?
This is a collection of scripts that you pick and choose what to throw into your project. Surely Heretic mentions what scripts work together; he was extremely thorough with his words.
There are several ABS's and no one is really going to take their time to verify with EVERY SINGLE ONE to test for compatibility. Honestly, you should choose an ABS that you like first, THEN look at Heretic's scripts to help narrow down what scripts you can use.
Also note that there may be some scripts that don't work "straight out of the box" and require some modifications (sometimes minor) to be compatible with others. So do ask if it's possible if script A can work with script B before ruling it out completely.