I'm looking into getting the new KGB boots, and was wondering if anyone here has used them. They look tough as nails, and I like the high ankle support. I guess my only concern is the overall weight of the boot. A boot can be bomb proof, but if I'm tired after walking six miles in them, not sure they would be worth it. Our local pro shop here doesn't have them in stock to buy or try on. Any actual "reviews" out there?