MTOM interop working...
I knew MTOM support was already implemented in recent JAXB 2.0 builds but I had missed that the full integration with JAX-WS 2.0 was also working. I just talked with Rajiv and he tells me that last night Simon and Rags got it working between the Indigo Beta RC and the JAX-WS 2.0 EA2 released last week.
I hope I won't jinx by talking about it, but Simon and Rags will demo it during their session this afternoon.
The session is TS-9866, "Advanced Web Services Interoperability", 2:45-3:45 in the Yerba Buena Theater.