I think I'd go with a stainless steel, fixed sight, round butt, 4" barrel L-frame in .357 Magnum. You can shoot everything from .38 S&W to full-house .357 Magnum, including shotshells. You don't have to worry about knocking the sights off, and the stainless finish resists weather, sweat, etc. With the RB, it's fairly easy to carry concealed, and the 4" barrel is a reasonable compromise between comfort and velocity. Unfortunately, S&W doesn't make one of these, and the neither does Ruger (Speed Six).