Caught me in a transition as my department is going from .45 to 9mm, and my 642 broke last week. Typically when it isn't too hot, I carry a Glock 19 with a TLR1 in a safariland ALS paddle, usually with a spare magpul 21 rounder support side. Depending on other conditions, I AIWB the 19 without the light in a safariland 27, Carry a 26 in an ALS paddle (don't have an IWB yet for it), or pocket or AIWB a Glock 43. I have an LCP coming for really hot days. The 43 and LCP replace the 642. Truth be told, if it was totally up to me I would carry a .40 most of the time. I have four HK and four Beretta .40s that I really like. Anytime I leave town there is either an 870 or an M4 in my truck. I was driving through chattanooga when ISIS was shooting the joint up, and had a total of eight 9mm rounds on me in an LC9. Never again....
P.S.- I just got the 43 last week (replacing the 642), and I tried it with 115gr gold dots and 147 golden sabres, standard pressure. I found the Golden Sabres to be easier to manage recoil wise. Of course dang near anything kicks less than a 642, especially with +p.