I finally brought home a sibling for my G31. I'm the proud new owner of a G33 sub-compact Glock. The G31 has agreed to share holsters and mags, so no need to hold a gun shower.
I still take a standard (aka full) size Glock with me quite often (esp on trips, or as a car gun). In the last year I have become a little less willing to "deal with" a full size carry every day.
Last August, I purchased a S&W 642 (but had considered a G33). As an owner of a G31, I figured the G33's role could be filled by a S&W 642 (plus the S&W 642 would fit an additionl role as an easy to access winter coat carry / inside the pants pocket carry). For me, there is also the slight feeling that a revolver is slightly more reliable then a semi-auto. For me, the revolver is quick and easy to access compared to all other CC firearms considered. In addition, sometimes the occasion just calls for a basic carry (no extra ammo) and the S&W 642 fits that roll nicely (and is better then carrying nothing at all).
Honestly, the S&W 642 can fill the G33 role, however, when it comes to carrying additional rounds, I don't like revolvers. Going to be just as easy to carry a G31 mag. I don't know what happened over the last seven or so months, but there was a role between the standard size Glock & the revolver that the S&W 642 was addressing the minimum need, but not the full desire.
I'm guessing a slim carry 9mm (Kahr PM9 / Walter PPS) and a .380 ACP (Ruger LCP / Kel-Tec P-3AT) are two other nitches to some day consider, but for now, I'm willing to believe the G31, G33, and S&W 642 will fit my CC needs.
THANK YOU TO THE FORUM. It really helps to hear from others beyond the same old range buddies and family (as wonderful as they are).