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I can't speak to Jericho reliability, but I own a M&P45, Glock 19, and Glock 17. All three are very reliable pistols in .45 or 9mm. No reason to expect that they wouldn't be equally reliable in .40 S&W. One thing to be aware of, particularly with regard to shooting reloads, and with regard to rechambering self-defense ammo after having been shooting ball ammo at the range, and that is bullet setback - to the effects of which the .40 S&W cartridge seems to be more sensitive than the other two calibers, with the consequently increase possibility of Kabooms. But certainly the performance is there if you want bang for the buck without increasing frame size.

Keep the following in mind...... I just now went and mic'ed out the frame width of my full-sized M&P45 and my compact Glock 19. The .45's frame width was 1.156" across. The 9mm's frame width was 1.163" (the slides on both pistols are narrower than their frames).......in other words, the M&P45 was actually a tiny bit narrower than the G19. Now, that is not enough narrower that you'd notice the difference carrying either pistol, but it does mean that you could carry a .45, in a pistol no wider than a 9mm, in a caliber that is more powerful than 9mm, but without the attendant risks of bullet setback in a high-pressure cartridge like .40 S&W. In other words, you don't HAVE to go with a .40 to get what you're looking for........unless you just really like .40 cal and want it, which is perfectly acceptable too. (Except for the single-stack G36, the Glock .45s are big old honkin' guns that can't compare to the M&P for compactness. OTH, they have higher capacities than the M&P.)

Another possibility is the Springfield XD/XDM line. I own a XDM45 Compact 3.8, and it is the equivalent of a G30 in capacity, but no bigger than the G19 in size, and it also has slide contours which are more conducive to carry. It also has additional features that make it worth consideration. When I am carrying a double-stack .45, that is my go-to gun.

I'm just saying that you have options you hadn't maybe considered. And by the way, my EDC is a G17 lately, so it's not like I would steer someone away from either a Glock or a 9mm. But my other carry guns include .45s, and I sold the only .40 I ever owned - a H&K USP Compact - not because it was a bad gun, but because I never could get used to shooting .40 caliber very well, compared to which .45 is a big old pussycat.

Food for thought......