Nix is awesome for experienced Linux users, AND that want to constantly play with their config file. If you do things and install things at the user level (which way too many do) then you’ve removed the benefit. That said, do it right, and recovering, moving, or duplicating your system could possibly be any faster/smoother.

Not saying it’s hard to learn, but if you’re not used to the CLI and editing config files, I’d start with it in a VM. If you decide you like it after you’ve totally set it up there, then the magic of Nix comes when you install it for real and just redeploy an exact clone thanks to the config file.