I think it depends on the overall look.
If I was going low with steel wheels then I wouldn't fit a spoiler or any other bodykits or parts - I'd keep it all very simple, clean and uncluttered.
Although I do agree with that opinion, i actually hope it's not the case with all colours because I've had his spare set of banded 18s for my T6, but yes I do think steels need simplicity to make them stand out.
Let's see how they look on mine when I fit them.