Not sure about concealed on my person. But as a truck/boat gun, certainly would carry and use one for SD. My choices would be the 1858 and ROA. Loaded with 30-35 gr FFFG and either round ball for the '58 or cast conicals in the ROA. Lubed wad between powder and projectile. I'm a decent shot with most any SA. As long as the gun is clean and a proven shooter, why not? As far as needing more rounds, the J frame is always close.
But yes, I would feel ok with only a C&B revolver. Should work for the majority of situations.
NRA Life Member