The Nightstalker is the only SWK I have in my kilt collection. I've washed it a few times and let it hang dry with no negative consequences.

It does seem to go with everything, however it has drawn a few disapproving looks from a few elderly females in my Church who used to do Scottish dancing. They don't feel it's a real kilt because it's not a "real" tartan.

I told them that I like it so I wear it.