First of all, I think it's just great that people from all over the world are interested in Lederhosen. Being born and raised in the middle of Bavaria I think Chinese replicas are only an option for tourists comming to Munich once a year. If you live here and participate in the traditional events than you want to make sure to have an original, because
1. everyone can see if its a fake or not
and 2. real Lederhosen are indestructable. When you're grown up, you need a maximum of 2 Lederhosen for the rest of your life.