civilian "Argyll"jackets

[David Dubh]

Hi all
I wanted to ask questions about kilt jackets in the " argyll" type. The reason that I put in the quotation marks is because I dont want discussion on the different cuff styles but rather on the use for these jackets.
1) can/should a tweed jacket be worn for morning dress through to evening wear (non black tie) with or without a waistcoat?
2) I have a charcoal tweed jacket and am considering buying a waistcoat to go with it. I'm concerned that getting one that is exact match is possible, so could I get a complementary one in blue or green sort of idea?
3) should it be tweed or could it be baretha in a complementary colour?
Pictures if you have them would be appreciated.
Slainte David