Apologies for the double post :(
Just an idea I had. I haven't tested it this is pure theorymon. Would a Choice Band set be viable for Lucario? It might make a good lure, hitting pokemon that expect weak attacks or set up extremely hard on the switch in, while also being able to revenge kill with ExtremeSpeed or even sweep with it late-game. Things like Slowbro, Jellicent and Hippowdon would get 2HKOed before they can retaliate or restore their HP, giving it an advantage over the standard Swords Dance set, while its 4x resistance to Stealth Rock make it easier to switch in and out (which it will have to do a lot of when using Choice Band).