Jack of too many trades..
Join Date: Aug 2013
Location: St. Louis
When I moved into my house (a 1927 Brick Craftsman), someone from the 1960s had *very* carefully cut, glued, and nailed dark plywood trim to the interior walls. It made the already small house feel like a cave. When I pulled the paneling off, it tore big chunks of plaster out of the walls due to heavy construction adhesive that was used. The pieces of original trim had been ripped off, or cut to accomodate this horror show.
Whatever the customer wants to do, try to be considerate towards someone who comes after that may disagree with the choice to panel the wall.
Were I in your position, I'd recommend a board-and-batten design, where thin strips of trim and nailed over the edge seams and on 16" centers to create a coffer-panel sort of design. 18ga staples should hold 1/4" on w/o trouble