Yah... I tend to agree with this.... I do it so subconsciously now I don't even think about it, but every vape, I'm picking up a different mod w/ a different tank, holding a different juice. If I don't, I end up burning one out quick

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This is from a couple of weeks ago, but I am always swapping tanks, heads, mods around on a daily basis:
Seems excessive, but I rarely have less than 11-14 mods in continual rotation, and I definitely vape them all.
If you don't vape quite so much, you can get away with just rotating heads with different juices, or what Oscelot suggested, individual small clearo/cartos.