Argyle/Argyll tweed Jacket and Waistcoat Advice

[David Thorpe]

I tend to also disagree with your assessment that the tweed 'Argyll' jacket and waistcoat should only be restricted to daytime events...

I didn't say that, although it appears that you weren't the only one who read that into it.
As to Thompson's book, he wrote several times in it that what he stated were guidelines rather than hard, fast rules. He was also very careful to separate his personal opinions from the "purist view" and general practice -- that general practice now aged thirty-some-odd years.