Joe, forgive me saying so, but there is no arguement that Andrew looks fine, I agree, the issue is how to help his wife to see it and accept his kilts.

I showed his picture to my wife just now and asked her how she would feel about ME wearing the black kilt, she said she prefers me in tartan, "it's more like a kilt".

My wife has also struggled with accepting me in a kilt all the time, it's getting better all the time. Careful choice of colours, accessorising etc all go to help her accept kilts more (and makes me feel better too).

My comments (again) are strictly in the context of Australian women.
It's been said before that plain kilts appear to be more acceptable in America (Hamish may disagree)