I hate the extended mag thing, too (though I know of at least one family whose members have the smaller and larger glock, with the premise that his mags will fit in hers, even if a bit long). I was thinking more like double stack .45 mags - say Baby Eagle, or CZ. Heavy, steel, and tight.
Like I said, the stripper clip is not for a speed load, but having a few in the emergency bags might keep one from fumbling around in a time of need.
I have occasion to travel to a neighborhood where there has been a tendency for locals to drag people out of their cars with about a 20 to 1 ratio. If I am out the normal mag plus two spares, as you say, I’m in real trouble.
I will agree that there are some nice double stack .45s, but my preference is the 1911, and since effective, comfortable carry is limited to 8+1 in most cases, I don’t find the larger capacity mag prohibition to be limiting personally, but agree that it is bad, unconstitutional law. It needs to be stopped.