blazer badges

[saxandpipes]

Hello all, (this is my first post)

my question is related to blazer badges.

I had an unfortunate run in with some ice on my bike (in Holland) and scraped a fair chunk out of the front left hand pocket of my favourite (and not very old, I might add) navy over-coat. Looking on ebay for a clan badge (Gunn) to cover the hole, I came across a blazer badge for the Black Watch (which I like very much) and I was wondering what the etiquette was for the wearing of badges for regiments to which one doesn't belong- is it just disrespectful? (it is a nice coat, and it would look good)

I understand that the Black Watch's tartan is considered universal, and may be worn by anyone who wishes, but I would really like to know what the story is with the badges?

I hope someone can help,

Thanks,

Michael