WARNING: I live in the Grate State of Kalifornia, Southern Coastal Collective, and my Dear Leaders have determined that I'm much better off without a CCW. I might hurt one of the hundred of thousands of gang members or early-release criminals that roam this open air prison. As such, I have no practical experience with CCWs.
I'm therefore eminently qualified to offer my opinion.
One of the neat things that attracted me to Glocks early on is the interchangeability of magazines between models. I could carry a G26; very concealable. Once the initial 11 rounds are exhausted, a G17 mag could be introduced for another 21. Heck, the larger mag might be swapped just to provide a better grip and more control. A clear advantage over a 5 shot snubby, which has to reload five at a time for as long as bad things are happening, and is always small and hard to control. Call it a force-multiplier.
Gawd forbid having to use 32 rounds in an altercation - much less even one - but with the new technology driven flash-mobs, and the possibility of Zimmerman riots -- maybe not all that crazy.
I await your ridicule and scorn. I'm really interested, as I might be repatriating to the United States as the job flees Kali.