Shaman's wear mail while most Shaman's in Lore wear some Tribal Leather stuff.
(except Thrall that wears his Doomhammer Stuff)
Every Shaman can cast Hex, while lorewise hex is a spell only used by trolls.
Tauren's aren't that kind of Warrior that charges with 2 Big Weapons into the fray, but Tauren still can be Fury Warriors.