Smiley, it's pretty common to tear up your pants and gaiters in the beginning. Just patch the gaiters up with duct tape (if you're concerned about the looks, you can ducttape from inside). Most people wear softshell pants (lined with Polartec fleece) without a top shell. Something like Patagonia Simple Guide Pants or Outdoor Research Solitude pants (you can usually find them on sale). They're usually made of burlier fabric and are quite tear-resistant.