MMO Champion has pointed out something that should make Warrior and Shaman weaponsmiths rather happy: all one-handed epic weaponsmithing weapons will be non-unique as of 2.4.2. Combine this with the fact that the Main Hand designation is being taken off of most weapons as well, and you can see where this is going. Dual-wielded Dragonmaws, anybody?
If you can scrape together the mats, 2.4.2 should be a very good time to be a dual-wielding weaponsmith of the non-Rogue variety. The 2.7 speed on the mace and axe weapons means that your Windfury and Whirlwind will be very happy. All you have to do now is hope you have enough badges, gold, or pull with your raid leader to get all the Primal Nethers and Nether Vortexes ready to go.