It's so cliche to recommend a more complex tool --- with its own associated learning curve and more complex failure modes --- when there's already a simple method that works perfectly well, but isn't "best practice" or whatever the dogmatists call it.

Can you run two or more versions and compare their behaviour simultaneously, even debug them side-by-side? I'm sure there's some sort of plugin and IDE ecosystem that you can spend tons of time learning how to configure just to be able to do that, but if all I need to do is to copy the files and rename them, why not?

Do some people really love excess complexity so much?