Everyone carries a gun in Texas !??!
If I need an extra mag. ... I'll just ask the guy next to me.
HOPEFULLY, He too will have a .40 or .45 !!! 
Carry only one: No BUGs.
CW40 ...6 in tha' mag. & 1 hot. carry 1 ea. extra mag.
XD45... 13 in tha' mag. & 1 hot. ONLY carry an extra 10 or 13 rd. mag. IF... I'm out and away. (Why ? I don't know )
At home... One in tha' kitchen, One in the bedroom, ... SKS is upstairs = ready to rumble !!! AND, if this doesn't work ... I'll have tha' Wife grab a BIG KNIFE, and start screaming while she charges tha' BG ?!!!!
I'm not ready (nor trained) to leave handguns in my vehicles... I pretty much like my guns on my person.
Mac
.45 >>>>>>>>>>>>>> @ %%% @