Chatting about this off list it sounds like the motivation for this is performance and reducing the overhead of creating a new session for each request rather than necessarily caring about message order. I've spent a bit of time reading through the JMS spec to see what we care share when and looking at what we could do in the Tuscany code, but it would be good to have some specific scenarios of where the current performance is causing a problem - is it statless or stateless scoped components, are they one way requests or request-response style operations, are persistent messages or transactions important etc?
...ant
