As a former Varushkan, your concern is appreciated! While lamellar, especially coats and tunic-style, is iconically Varushkan, it is definitely one of the cases where there is an amount of brief overlap - even setting aside that with expensive items like armour, we should be a bit more forgiving with the brief. As Rong said, it wouldn’t be out of the question for some nations to be wearing a Varushkan-looking set of lamellar, even if it wouldn’t be unreasonable or out of character to look at that character and think “Varushkan?”
However, with the touches you’re proposing, I don’t think you have to worry about that at all. The linked image looks super Kallavesi to me and I wouldn’t mistake armour like that for any other brief. Try to avoid Varushkan touches - make sure your bones look like those of animals rather than monsters, use Wintermark runes rather than Varushkan virtue animals for decoration, make sure fur looks rugged and natural rather than neat, expensive-looking trim. Feathers are a sure-fire Kallavesi signifier that will set you apart from Varushkans immediately.
Thanks again for thinking about this. Keeping briefs distinct helps everyone feel special and preserves our national identities.