From what I understand with the licenses is it a case of one or the other. And really, I have no problem with that. It is a license after all. WotC is saying I allow you to use our rules our work to sell you product. We only ask that you pick either Column A or Column B. Oh, you want to do both? OK, you can, but you need to publish for Column A under the XYZ name, and publish for Column B under the ZYX name.