Seeking more opinions about White Tie and a velvet Sheriffmuir

[Phil]

Just for clarification as you asked originally about correct "white tie" wear this is what would be regarded as appropriate in Highland dress -


You have obviously decided on a Sheriffmuir, however, which is an excellent choice and a favourite of mine for a number of reasons, not least of which is it is worn open and so is cooler and, perhaps more important, is more forgiving of an expanding waistline!

Here are a few different ones -
Casual


formal


more formal


I know you don't like a jabot but a bow tie just doesn't look right with this jacket. A Kenmore in velvet might suit you better -