After vetting my carry gun...I rarely shoot it...but do occasionally.
I have a second, (older), version of the same gun I use for training and qualifications with the sheriff's office.
Either one would be suitable for carry, but only one gets the majority of the mileage.
Now this is a good idea. Once you settle on a EDC gun, buy two. Vet one and carry; let the doppelganger take the beating from the training. That's sort of what I did carrying the compact 1911 and shooting the full sized ones at the range.
Maybe I should get another G19 to run up the mileage on? On the other hand, G19s can go tens of thousands of rounds; I'll never wear it out in my expected life span.