I like the slightly-more-hand-filling SP101, and yes, it is "enough" to be "primary," if I have a secondary with me, too, and yes, a second SP101 is a perfect secondary. Notably, the OEM SP101 grip is perfect for my hands. I can get my skinny pinkie wrapped around the grip; no need to curl and tuck the pinkie under the grip. (A J-Frame, with oversized grips, is often a bit longer/taller, overall, than an SP101 with OEM grips.) My hands are deep/long, but not wide, and I have slender fingers and thumbs, so small-framed revolvers are a joy to handle.
I do, actually, tend to carry a G19, most of the time, but that is largely because I swore an oath, and still have the badge. It is convenient to carry the same primary pistol on and off the clock, and I have a duty to intervene in other folks' problems, 24/7/365*. That badge may go into a shadow box before the end of 2017, or if not, in 2018. and a pair of SP101 snub-guns may become again become my normal daily carry*. Well, OK, one will have a 3-1/8" barrel, which some will say is not a "snub" length.
Before I these several SP101 revolving pistols, I had a small ensemble of J-Snubs, and never felt particularly under-gunned. Notably, a much-favored J-Frame was my 3-inch S&W Model 60, with a square grip frame, which I could shoot almost as well as a 4-inch larger-frame revolver, out to 25 yards, at the PD qual range. I think I traded that 3-inch 60 to help finance a 1911, and then developed seller's remorse. I tried to find another 3-inch 60, but they were rare. I handled an SP101, and found what I was missing.
*From 2002-2006, I carried SP101 revolvers during personal time, in a big city, during which time carried chunky double-column-mag autos at work. Finally, I committed to carrying double-wide pistols during most personal time.
