Get two keys for the pitlocks, I hear that they only come with one know - truly stupid thinking on behalf of pitlock. When I got mine about 5 years ago they came with two keys; I keep one on my keychain and one at home tied to a 14mm wrench. I run a 5mm allen through the holes in the pitlock key when I'm on the road to loosen and tighten the pitlock.
One thing, just be careful not to over tighten the pitlock, you can break the skewer; its easy to do with a 14mm wrench. Just let it "click" a few times and it's tight enough.