Yeah, we left out @Inject from Switchboard for AS6. We only considered the Java EE resource annotations as specified by section EE.5 of Java EE6 spec, to be in scope of Switchboard.
Marius and me discussed about this once, on whether we could do something about this for AS 6.0.0.Final. But given the tight timelines this never made it. I'm not sure whether Marius has any plans for this in 6.1.0 and how easy it's going to be to accomplish this. Can you open a JIRA in JBAS project for this? Atleast we can then track this to see if it makes it into 6.1.0.