I’m now running a 48 as my EDC. Back when I first started carrying, I had a full stainless Gov’t 1911 from Springfield that I had custom built. Great gun, but it was hella heavy. From there, I jumped on the plastic 9mm train with a Springfield XDM 4.5”. It wasn’t really any lighter, haha. But I did jump from 8+1 to 19+1, and carried two spares. Not sure why I felt I needed 58rnds on me, but I was young and had just come back from two years in Detroit, so maybe that’s why...
I carried that thing daily for two years, and took several classes with it. But then I learned the comparably sized Glock 17 weighed almost 8oz less, and found a shop selling LEO trade-in G19s for a song, so I bought one. Couple hundred round later, and I sold the XDM! That G19 was my daily carry for almost a decade, but after trying to carry it AIWB, I realized it digs unto my gut too much.
Enter the G48. Sure, I get five fewer rounds per mag, but the dang thing is amazing. The G19 fits me pretty good (my hand fits the grip, though a 17/45 feels better), but the thinner profile of the 48 is even better, and mine is exceptionally accurate and carries very well.
If I’m going somewhere that I think justifies the added capacity of a 19, I’ll carry one. Literally anywhere else, and the 48 is what comes along anymore. I’m looking into the S15 mags, but want to see some extended use reports before I feel comfortable using them for anything other than range mags.