I am a newbie, so take this FWIW.
I shoot production with 4 on the belt and 1 in the gun.
Besides total round count, there are plenty of times I reload without expending all the rounds in a mag.
Let's say there are 3 papers then a move to a port with 4 papers. I would shoot 6 shots and then drop a mag and reload on the way to the port. Most likely would drop the next mag after the 4 paper too.
Having 10 rounds to work with makes you think a stage through pretty hard.
I enjoy the planning part. Can't say I am great at it, but I do enjoy it.
For the extra $100 for 2 mags and mag pouch, I would go for it. Given the $ investment in equipment, match fees and ammo, it is not much and will give you cushion.
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