Wow, 14 pages and counting!
I guess for me, it seems as though the "advocates" for higher capacity are basically coming at it from "it might not help, but it sure can't hurt." Would that be a fair assessment?
I guess Sig and now Springfield have changed the equation to where one can carry 10-11 rounds in a footprint about the size of a 5-shot revolver. So one could ask, "OK fine, all else being equal, regardless of whether you live in the safest town in the safest state in the safest country on Mars, why
wouldn't you carry something with more capacity, just in case?"
The original question was "in every day carry" which puts no restrictions on what's being carried, or why. If someone prefers carrying full frame pistols, it's a non-issue because they have 17 round mags anyway. If someone prefers carrying a revolver on the merits of a revolver, it's a non issue because 6-7 shots is probably your max in any scenario, 5 probably being most likely, and reloads are similarly small (and much harder to pull off under stress).
And so the question is absolutely open-ended.
Maybe a more focused question might be "do we need high capacity in micro-compact EDC?"
That limits the discussion to what had always been either 6-8 round (in 9mm) single stack pistols, or 5-6 round (.38) revolvers. Or .380 pocket pistols I guess.
OK, so there the "why not?" argument would seem to have a lot of merit. If a P365 or Hellcat is the size of a J-frame or a Glock 43, then (ignoring brand loyalties or specific ergonomics) why not carry a 10 round micro-compact instead of a 6 round micro-compact?
Is that really the question being asked?
Seems to me, then, ignoring brand or price or whatever, just on the merits of the guns themselves, you can either get a micro-compact with 10-12 rounds, one with 6-8 rounds, or a revolver with 5-6 rounds.
To the revolver guy, both of the other options are basically "high capacity"
He's carrying the revolver because he prefers revolvers (and now having carried one for a while, I scan see why -- they're so easy and comfortable to conceal!).
Anyway, I'd resolve the question this way.
1. Might not help but can't hurt. If I were in the market for a brand new EDC, sure, I'd get one of the higher capacity models cuz why not?
2. I'm not in the market, I'm happy with my Walther PPS, and I do not feel under prepared with 8+1 and an 8 round reload.
3. On days when I just want to keep it simple, or need to wear dress attire, the J-frame comes along and I really don't feel under prepared with that either. But I'll almost always pick the semi-auto.
By the time my Walther breaks, Sig will have released a pocket pistol holding 21 rounds of .45 ACP with no recoil, so I guess I'll buy that next.
I'm still holding out for a 13 round J-frame!!!