I've the same doubt, and so I've made jboss-wsse-client.xml in the same way as jboss-wsse-server.xml.
Garyng, did have you solve the problem?
I've problems with client side :(
For anything that is running on the actual appserver (ejb/web clients), the settings are the same as the server
<key-store-file>WEB-INF/wsse.keystore</key-store-file> <key-store-type>jks</key-store-type> <key-store-password>jbossws</key-store-password> <trust-store-file>WEB-INF/wsse.truststore</trust-store-file> <trust-store-type>jks</trust-store-type> <trust-store-password>jbossws</trust-store-password>