Since this picture was taken, the Barbarian Shaman armour has been fixed. They took out the STA and put it in WIS instead. Now, a full set of this will give you an extra 12 or 13 WIS instead. Still has STR and HP, but I can't remember if they've changed the numbers.
Still, even if it had no WIS, it's still worth doing. It's free armour after all. Any AC and stats are better than none...