Today's Sunday paper's front page news carries a photo of a gent smartly kilted with a blond lifting his kilt to reveal boxers. Contemporary kilt company Slanj whom recently started hiring kilts insists (with a notice in the store) that hirers must wear undergarments. The article goes on to say that this has been a measure taken due to the state of some of the kilts on return.
A gentleman whom I know owns his own kilt shop has been suggesting that for years for the very same reason.
Apparently the traditionalists ain't happy.