This is one of the first discussions I've read on here where I feel completely afloat. It sounds like there's a lot more to jumpseat etiquette and protocol than is formally published? As someone who may and/or may not end up flying for a CASS carrier at some point in the future: Would anyone be willing to give me a little sidebar explanation of the nature of this conflict? I may not fully apprehend the manifold distinctions between 'jumpseating', 'commuting', 'deadheading', and 'non-revving', and their relation to rest rules, precedence, and the like.
If this is all "You would know it if it applied to you" stuff, then that's fine, too. ^.^
-Fox