We have not done much testing at all for JBOSS on the demo site for BLC 2.0 and up. All of our testing is geared towards Tomcat and Jetty, since these are very light-weight containers that do not provide a lot of dependencies out of the box.
I think the main problem that you will run into is with dependencies. JBOSS usually comes bundled with a fair amount of dependencies already, and you'll end up with conflicts if you have those jars (with different versions) also bundled in your war.
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