Proper shirt for wear with a Sheriffmuir

[Tobus]

To be honest, I don't think it is identical - the lack of sleeves, no epaulettes, no high collar, and no accompanying waistcoat, give it a somewhat different feel - hence the request for an alternative image.
I am not saying a Jacobite shirt would not work but I would be interested to see it.

I agree. The item in question is more of a costume piece made specifically for wearing with that type of shirt, and is commonly seen at Renaissance festivals and such. It is often called a swordsman's vest or chieftain vest, or similar type monikers depending on the maker, which further suggest their costume role. I wouldn't quite put it in the same category as a Sheriffmuir, despite having some similar decorative details. The overall effect is quite different.

EdinSteve, just to clarify my earlier reply, I was not suggesting that anyone should not wear what they want. I was simply saying that the Sherrifmuir seems to be built in a manner similar to other evening jackets, with details that are specific to the more formal end. This would suggest that it's more of a formal jacket and not a casual jacket. Seeing square metal buttons and tashes on someone in a casual setting, or during the day, if they are not wearing it as part of a uniform or regalia (such as pipers, etc.), would seem oddly out of place to my eye. And especially so when paired with the folksy casual look of the Jacobite shirt with its leather laces at the neck. The two put together create a strange dichotomy in levels of dress when compared to the "norms" of modern Highland wear (i.e. not from the 19th century).