I think your shoes are fine.
The most versatile choice is to stick with brogues, not ghillie's, but black brogues, or wingtips without the extra long laces. Black brogues are fine for black tie, and can be worn at all levels of formality.
However, inasmuch as you are interested in wearing diced hose, I have a different suggestion.
Hamish first recommended the Glennfinnan Shoe by MacKenzie Frain. It is a bench made Scottish buckle shoe that is elegantly formal, yet a little less gaudy [IMHO] than the Regimental style of buckle shoe.


They are not inexpensive, but not crazy either, and they are a great option for kilted formal wear. Just an idea...
"Before two notes of the theme were played, Colin knew it was Patrick Mor MacCrimmon's 'Lament for the Children'...Sad seven times--ah, Patrick MacCrimmon of the seven dead sons....'It's a hard tune, that', said old Angus. Hard on the piper; hard on them all; hard on the world." Butcher's Broom, by Neil Gunn, 1994 Walker & Co, NY, p. 397-8.
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