yea know what you mean, although it doesnt do much more than add a mission pretty nice, the only people that seem to know about it are the legionaires, other than that everybody else is clueless...
but put it this way, save your data folder, install mod, raid the ebony mine(after a crap load of skeletons, they do mean overrun for a reason) then make ebony armor in mournhold, turn around save the game, reload your old data folder and walla brand new set of ebony armor, without any side effect if any that this miniquest might have...