I have recently acquired a beautifully made (and pricey!) embroidered clan crest (you've probably seen them...the ones that employ gold wire in addition to the usual colored threads). About 4.5" diameter.

I was thinking of putting it on the breast pocket of my black Argyle (actually a converted sport jacket. I've seen crests on semi-formal jackets like that on many occasions. Then I got to thinking...is it appropriate to put it on a PC (or in my case a converted tuxedo jacket) for black-tie occasions? I have very limited experience with formal Highland attire (other than the photos I've seen here) and I cannot recall seeing a clan crest on a formal jacket.

Any opinions from members who have real experience with formal attire are appreciated.