If I were you, I will use the server that the JWSDP mentions; for example, the Sun
Java Server.
If you will use other servers, just remember to use the corresponding tools for those servers, e.g. deployment tools,
ANT, etc.
For security, at least for JWSDP 1.6, you cannot use those provided XWSS deployment descriptors into RAD/WSAD, because RAD/WSAD uses its own proprietary descriptors. Moreover, there are some topics that are not supported yet by RAD/WSAD/Websphere 6 Server. E.g., RAD is unable to create a stand-alone web service security client.
[ August 11, 2006: Message edited by: Jesus Angeles ]