HELP Please! Using NDS to develop non-SAP Java Applications

Is anyone out there using NDS/WAS to develop J2EE applications that are not tied to SAP?? We are in the process of piloting NDS/WAS to replace our current IBM Java environment, and are looking for other SAP clients that either have done this or are in the process of doing it.

We're getting very little support from SAP on this effort as it appears to be more "bleeding edge". We need to find Best Practices for doing this. Some questions we have are: 1) should we use the Java Data Dictionary, 2) should we use JDI, 3) when should Web Dynpro be used (external and internal apps), etc.

If any one can assist or can point us in the right direction, I'd greatly appreciate it.

Thanks!