USP has developed a hanger for firewalls that allows all of the wood framing to be installed prior to installing the gyp board. It looks pretty interesting. http://www.uspconnectors.com/us/products/connectors/solid-sawn-hangers/top-mount-hangers/FWH
LP Smart Panel is a great product that is used frequently on the sides and rear of houses to provide a nice looking exterior that is also very economical. One item to consider when using this product is that double nailing at the rabbeted panel joints is required to meet IRC braced wall requirements. This would not apply along all portions of a wall, just those required to be braced wall panels. So, for contractors, if LP Smart Panels are used, pay attention to the plans where braced wall panels are specified. For Designers, if LP Smart Panel is used, don’t show more braced wall panel that is required by the code to minimize the amount of double nailing.