My solution is to wear a laird's plaid. However, I suspect a lot of rabbis would make a case that fly plaids, even if worn in the evening, should have fringes. The commandment is to put a fringe on the corners of your garment. The tallit (and tallit katan, the undershirt like garment) came into use because we stopped wearing four cornered cloaks as every day wear. However, if you are going to wear a four cornered cloak (and isn't that what a plaid is, basically?) the commandment applies, and you should tie fringes to it. I have done this with my Leartherneck plaid, and I am working on the others. Not today of course, it's Shabbos.