The attached example shows how one can use the ODE PMAPI with Apache Servicemix CXF BC component to exhibit an external web service interface. The component is installed to the Servicemix OSGi environment using the osgi:install -s mvn:org.apache.ode.examples/pmapi-binding. After this, one can use SOAPUI or other client to access the PMAPI from the URLs http://localhost:8193/ode/pmapi/InstanceManagementService and http://localhost:8193/ode/pmapi/ProcessManagementService, including wsdl and xsd access.
NOTE: one still needs the workaround documented on the ODE site here: http://ode.apache.org/smx4-osgi-deployment.html.
A bug has been filed on Apache Axiom here to lift the need for the workaround here: https://issues.apache.org/jira/browse/AXIOM-355