I'm planning on leveling my warlock with alchy and herbing, and use my mining/ herb rogue alt to hoard engi mats so later I can end up with 2 crafting professions on the warlock(the main), and world pvp while gathering on my rogue, yay
Edit- Unless you're a pve tryhard, the 2% crit is worth losing for the engi benefits in pvp (also shadow reflectors for twins hueh)