I actually did this not too long ago and observed an interesting phenomenon that I had kind of noticed over the years, but never really tested.

I found a pair of shoes that I liked, but they wore out quickly with daily use (3-4 months). I bought 3 more pairs and rotated them and those three lasted for like 2 years.

As silly as it sounds, I wonder if there is something about giving shoes a "rest" that makes them last longer.