JBossWS (and J2EE webservices for that matter) does not provide support for static stubs, so if you want static stubs can not use JBossWS for the client, instead you have to use whatever you are using to generate them. So if you are using wscompile to use them, then you must use suns jaxrpc libraries.
There really is little benefit to using a static stub over a dynamic proxy, especially since the static stubs can cause portability issues.
-Jason