I'm one of the guys behind Javeleon. I can say that trying to start JBoss with the released 2.0 Javeleon version will fail. However, we have a dev build in-house that supports class reloading when running in exploded mode. Only thing to manually configure is creating sym-links from project workspace's compiled classes to the exploded WAR. If you're interested, we can send you guys a version with initial JBoss support.
Now, as you know, class reloading is not at all enoguh to update web-apps, so we are in the process of integrating changes to configurations, such as web.xml jboss-web.xml, etc. Right now we're working on reflecting servlet changes and mappings in the running container. Any hints on where to hook into JBoss would be much appreciated. We think we're on target by manipulating the context. Logging output tells us that mappings for new servlets are created, but the new servlets are not published to the URL. We've just started, so I would expect it to work soon enough. I'm out-of office, so I can't give you the exact details right now.
Anyway, if anyone would be interested assisting with integrating Javeleon with JBoss, please let me know about it.
Remember, that Javeleon is capable of full class reloading (changes to implemented interfaces and super class is also supported), so this would be very beneficial to JBoss devs.