Reinz:
Having grown up in age when spring technology was less than it is now, I got in the habit of carrying one less round than full capacity in my magazines. Old habits die hard. For my R9, I'll load six in the magazine, chamber one, and then leave five stacked behind it. My spare magazine, carried in its Hedley magazine case, is loaded with five rounds -- for a total of "lucky eleven" rounds carried.
And speaking of our dear, departed friend, R. J. Hedley, I am reminded that he once confessed to me that although he loved making holsters, he absolutely disliked making magazine cases. Even so, as all of you who own one or more well know, his mag cases are all superb.