I have a cush rear and a regular on my SXC. If you're running knobbies I wouldn't worry about it. See the FleaMarket for a guy looking for a new rear for his SXC where he trashed the hub. It happens. Probably not in 300 miles even if you were running Saharas (or some non knobbie).
Also OC is the wrong forum for this, it should be posted in thumpers.