McClef,

No, as a cantor I don't wear any type of robe or vestment. Some churches in the area have chior robes, but our little country church doesn't get that fancy. :-)

I usually wear kakhi slacks, dress shirt (usually white, sometimes a tattersahl pattern), tie (often tartan!), perhaps a vest, and sportscoat.

I haven't really talked to anyone about me wearing a kilt to Mass because, honestly, for me it really isn't that big of an issue.

I wear kilts just about every other day during the week, and Sunday is really the only day I get to give my nice slacks a workout. :-)