Seeking more opinions about White Tie and a velvet Sheriffmuir

[CeilidhDoc]

Yes, my imagined outfit with this is kilt with formal sporran, diced or argyle hose to match the tartan colors, black patent buckle highland shoes, Regency cravat or Jabot tie, Black velvet Sheriffmuir with debate open here on the appropriate vest as per my question (thanks for the first opinion on the waistcoat Jock Scot), and plus or minus the fly plaid, plus or minus a dirk. I'm not a regular dirk wearer but some sources seem to say that white tie is the time to bust it out so I'll include it here. And of course a formal sgian dubh, pocket watch, etc.

Personally, I would prefer to wear a matching black velvet waistcoat if this is acceptable. However I see many sources that say the only option is a white one for white tie, with some divergent opinions, and I want to know how large the population of divergent opinions actually is.

I'm just trying to nail down the particulars as I have never worn a doublet before and I don't want to make a mess of it at a white tie event in the USA where I may be the only person representing highland attire (better do it right if you are the only one in the room!). I have a PC coatee for black tie but I have never needed anything for white tie until recently and would not think of wearing the PC to a white tie event personally. So now I'm out for the appropriate highland attire and this is where I have landed.

Again, thanks to all for the comments, input, opinions.

Slainte