I believe that RDM should have access to the Eminent Staff for the same reason it has access to the Magian Staves. As far as Magic Damage (the stat) goes, RDM has almost no options for nuking effectively.

As much as people like to ignore or support it, RDM has both physical AND magical qualities. I'd like to nuke effectively in addition to being able to melee if the situation calls for it. I'll I'm asking for here is options. :O!