No time-in-grade with either the High-Standard derringers or the Mini-Rollers. There were a fair number of both in the pockets of road troops I shared beats with--all unauthorized to this day. Even 2nd arms of proper caliber were verboten until Feb. 1982, when the Sheriff (facing genuine election sweat from several quarters) suddenly approved back-up guns at an Association meeting. Drop from the sky, that was.
A 22 Mag HP or SP launched from a short barrel is no joke, esp. if sent via eye socket or mouth. A S&W Model 351 could find it way into my heart some day, now that some Suit in a cubicle farm no longer dictates what I cart around to keep pulse and respiration uninterrupted.