The serializers/derserializers generated by wscompile are JWSDP specific artifacts. You need to use them if your client is Sun's JWSDP, which is not a WS4EE client.
With JBoss' WS4EE client/server implementations they do not enter the game.
Please realize that client/server are fundamentally disconnected in WS. Basically a JBoss WS endpoint does not care how you construct the SOAP message on the client and vice versa.
You might want to study WS4EE a bit more. This is a good book
Thanks for the answer, I have ordered that book :)