I wear my kilt to work, for play, pretty much anywhere I want.

But, when it's time to get really dirty (auto/motorcycle mechanics, woodwork, painting, serious garden work - think tilling and building boxes, or working the fertilizer in (I use manure and compost)), I've got a pair of coveralls for that work. I've never found a way to really and truly get motor oil out of cloth, or get linseed oil out of cloth, and I don't want to subject my kilts to the repetitive washings it take to get the manure out.