Has anybody heard of Ruko knives? Does anybody own one or have any experience with one of these? [ame=http://www.amazon.com/Handle-Survival-Molded-Sheath-4-Inch/dp/B003Z6NKX0/ref=sr_1_3?s=sporting-goods&ie=UTF8&qid=1359268711&sr=1-3&keywords=ruko+knives]Amazon.com: RUKO Nylon/Zamak Handle Survival Knife with Molded Nylon Sheath (6-1/4-Inch): Sports & Outdoors[/ame]