yes, I believe a total of 2 mags of perfectly enough for citizzen carry.
Unlike a military or policeman we generally carry concealed without a duty belt.
Often other things are more important in our daily life such as comfort and concealment and many stop carryig or carrying regularily due to the bulk and weight of the pistol.
Carry extra mags excaserbates this issue to the point of maing it unrealistic.
Also while we can "waht if" any oprational problem fact is the vast majority of thugs runs away when they just see a firearm.
On top of that the average number of rounds fired in a civilian self defense situation is still 1.7.
Those of us who carry concealed must satisfy with carryng for the 85% solution.
For this even just a single mag will more than suffice.
And thats not including that the members of this forum are likely better shots that the public at large.