We just implemented code to help creation of Webservice-friendly CDI/bean services. Check out the screencast I just ran off.
The basic gist of what's happening here is simple enough. When SwitchYard sees a CDI @Service with operations implemented using JAXB annotated types, it automatically installs JAXB transformers to transform between these JAXB types and their corresponding XML namespace. If then (for example), you use the same wsdl (as used to generate the JAXB Java types) to expose a Webservice via the SwitchYard SOAP Gateway, all the transformation logic is automatically set up for the service, so no need to implement and configure any transformers.
Give it a try and let us know what you think!!