Dressing down the Brian Boru/PC

[CMcG]

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Can or should one dress down the formal attire using a Brian Boru or PC jacket? <snip>

Since this is posted in the Traditional Highland Dress section, the answer is "NO".

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Indeed, tradition says "NO," one most certainly should not!

Ontologically however, the existence of a dressed down alternative is entirely possible, so one can do it.

I'm not trying to be inflammatory here, just disambiguating to provide a more precise answer to the OP.