I'm definitely in the 'frequency' camp. When I shoot, I always fire my carry gun first, since that is the one I will fire 'cold', if the Bad Thing ever happens. After 20-30 rd, I will shoot other guns, until I start feeling like I'm just burning powder.
If I'm at an outdoor range, I will plink for fun after running through my drills.
Powder smoke- The Smell of FREEDOM!
I don't shoot to kill; I shoot to live.