Plaid with a regular suit?

[OC Richard]

this thread has drifted from the original post considerably and has digressed into one of our regular themes.

The OP asked

"If someone would be so kind as to inform me on sashes, laird plaids, fly plaids, mini fly plaids, and day plaids and their differences..."

It seems to me that such questions can't be answered without coming to grips with the notion of "tradition".

Otherwise, all such questions will be met with "do whatever you want" which is a non-answer.