Well - mountain goats would fit better. However, sheep provide slow income of gold thorugh the trade of fleece and Southmount players can use that extra boost for researching and upgrading as well as the food income from sheep.
And sure - Southmount players are a safe bet for defensive players, someone who wants to take it easy, build up, research, do a fare deal of questing, and be sure he`s safe against other players attacks. Real Turtle here.
However, itíll take Southmount player a great deal longer before he`ll have a strong enough army to successfully wage war against fellow players and acquire new territory.