Maker2

As others have written already, it is incredibly convenient when combined with a material station (and multiple printers) for the S5. Personally, for spools which I "load and use to completion" (such as DPA or PVA support material) I usually don't bother adding an NFC tag to them -- there's not much being time saved. However for spools that I need to load/unload several times (such as rarely used colours or materials) having them be autodetected by way of an NFC tag is an incredible convenience. It also takes the uncertainty out of asking somebody not used to the printers, to "load a spool of filament XXX into whichever slot is free". So yeah, a convenience, not a necessity. In the same way as the material station itself is a convenience, but not a strict necessity for multi-material printing.