I have a S&W 340PD .357 that is with me most of the time in a pocket holster. 8 or so years of use has really worn down the finish on the edges of the frame. It is the scandium model that has the lighter finish on the cylinder, so not the whole gun would need refinishing. Has anyone redone the finish on this type of pistol? Would cerakote or duracoat solve this or just get it re-blued?