Resolution:
Yes, BusinessWorks will interoperate with any TIBCO Adapter regardless of BusinessWorks compliance.  However, Adapters that do not fit into the BusinessWorks framework will lose certain types of BusinessWorks functionality, specifically, the ability to be configured from the BusinessWorks Designer GUI, deployed from the Designer, and managed from the TIBCO Administration Server.  BusinessWorks 2.0.3. provides a resource kit under TRA for adding custom adapters built with Adapter SDK 4.2 to the domain.  Both the documentation and utility are included in the TRA tools directory.