I know a couple of sword smiths that have produced very intricate work. I have no idea if they would consider something like a clan badge though. Take a look at odinblades.com. If he did anything he would probably acid etch the badge. But I can't speak for him.

I am trying to think of other swordsmiths (I know no jewelry smiths) that might consider something like this. I will post them if I think of them. If on the other hand you want a dirk, a sgian dubh, a baskethilt, or any other scottish knife/sword I have a whole list of guys to contact.