Lamy.
I bought the Spirit pen -
http://www.lamy.com/eng/b2c/spirit/261 - when I first saw it at the Pen Shoppe in Brisbane and I wanted something stylish, functional, and surely not like anything anyone else I knew would own - for that, "WTF is that?" factor.
When my stainless steel and plastic Pacer mechanical pencil broke - after nearly 20 years of faithfully drawing 0.5 mm lines for me - I looked for the exact same model, and couldn't find it.
Turns out Lamy have a Spirit mechanical pencil as well -
http://www.lamy.com/eng/b2c/spirit/163 - so I bought that.
Both pen and pencil are stainless steel, and despite being in the wash a couple of times, are in tip top condition - actually I think the wash cycles cleaned out the stainless steel and aluminium dust from work that was causing a slight grinding feel to the push-button mechanism, so they seem to be washing machine safe.
They are also very thin, about 6 mm - just under a quarter of an inch - across the main part of the body.
