Mixing tartans - yes or no?

[piperdbh]

I frequently see advice that one should not try to match one's tartan tie to one's kilt - is that an absolute no-no? It looks OK to me - so why is that advice so frequently given?

I've read some people here who say to avoid tartan ties altogether, and I'll admit to preferring a non-tartan tie worn with a kilt, but there's no law forbidding tartan ties mixed with the same tartan kilt. However, as Jock says, it's really easy to go overboard with wearing tartan.