I've been carrying since 1975, both on and off duty. At first, duty w2eapon and off duty (concealed) was the same, S&W model 66 4" Only difference was that for off duty, I replaced the S&W original grips with a spare pair of grips cut down to where they barely increased the grip frame width. Still have them somewhere.
Been through a number of off duty weapons, from a Colt Detective special which was so far off sight picture, no amount of gunsmithing could cure, through an assortment of S&W compact and full sized Autos, the lost years when I thought James Bond was infallible and that a PPK was the be all to end all as the perfect concealed pistol, to what I have settled on what I find to be (for me) the best. My usual carry is a Para-Ordnance single stack45 LDA built on the Officers frame,carried behind the strong side hip, either with or without a holster, or just for a little variety, a model 649 J Frame 357, usually carried same as Para, or just dropped in pocket,(shrouded hammer eliminates snagging on a pocket when drawn.
The only pistol I could never get comfortable with as a CC Weaon was the SA, cocked and locked 45 Auto. I have recently added one more to my list, the family of Glock Pistols. Bought a model 23, found out it pointed high for me when drawn from holster and that with no manual safety, it was not a candidate for Mexican Carry.
As usual I have carried on far too long, a thousand pardons.
JPM