Not the OP, but AMS can be useful for loading and unloading filament, as well as automatically continuing a print job when you run out of one spool of the same

Not the OP, but AMS can be useful for loading and unloading filament, as well as automatically continuing a print job when you run out of one spool of the same filament. It's not just for multi-color prints, although that's obviously the primary use case.