My 70 shaman got Herb/Mine, back at the beginning of TBC, I would just make a macro that swap between the 2 with my epic flying mount, you cover alot of ground and you dont miss either mines or herbs at all, it's pretty easy. You just have to keep scrolling between the 2, so it's doable.

So far I only have Herbs/Mines (default, was already there on my 70) and Tailor/Enchanter on one of my 4 alts. 5 shamans, I dont even see the point into getting LW for any of them, the good stuff are always BoP so I wont build it up 4-5 times beside with badges you can surely buy similar if not much better items. And for PvPing, no crafted items are for pvp beside weapons. BTW why isn't there any good spell damage weapon craftable, it sucks.