My friend and colleague Gregory Hoskins is editing an interdisciplinary journal called Expositions.
He and the journal recently hosted a roundtable discussion about the Zizek/Milbank interchange.
You can find the discussion here.
Contributors include Jeffrey Robbins, Brian Robinette, Frederiek Depoortere, Clayton Crockett, and Adam Kotsko.
You can find a link to my own thoughts on the matter here.