I have, in the past, carried my 27-2 with a 3.5 inch barrel. I carried it in a Roy Baker pancake holster and it concealed and carried very well. I only qualified with it (LEOSA) once. Its a nickel gun and almost too pretty to shoot. I also did not want to have it in an evidence room for an extended period in case of a unpleasant social encounter.
I have a blue gun also. I had the factory re-blue it about eight years ago and it turned out so well that I have never fired it. It was a LEO gun that had a lot of blue wear but did not look like it was fired much. The factory rep called and said it did not need any work or polishing, only stripping the blue and re-bluing.