I bought a S&W Model 13-1 with a square butt awhile back at a pawnshop. I love this gun it has a wonderful trigger is fairly light and holds 6 357 magnums in a 4" shootable package. I am wondering if there is anyway to convert from square to round I havent found a set of round grips to compare the two. I really hate to take to modifying if someone else has done this and failed. I just feel that the round would be easier to conceal. Is there any advantage to the square.