We've done quite a bit of work in the Webservice/SOAP area since I posted Webservices and WS-BPEL Process Orchestration.
Since then we've added the SOAPProcessor (SOAP onto the bus) action to complement the SOAPClient action (SOAP off the bus). Check out the Webservices/SOAP components and let us know what you think.
We had some fun upgrading to JBossWS 2.0 after we ran into issues with JAXB and how it doesn't allow us to use Java bindings that are not JAXB annotated. More on that in another blog.