I'd leave my netbook home on tours. I like it a lot, but a little paperback notebook, my pen, camera and phone are a lot more reasonable weight wise and in terms of cable hell. I am fine with typing up handwritten notes, and I can do it fairly quickly. I am not fine with the idea of my primary computer getting damaged or stolen on a tour. I have about 6-7 hours of battery life, so it would need charging unless the tour was a weekend or less.

I could probably save *weight* by switching to a camera/phone combo, but my camera is very small (4oz), very comfortable to use, and has about a 200 shot battery with the screen on. I can use it with the screen off and get a lot more battery life. The phone is as small and as stupid as I could find and runs for over a week on a charge, so the total package is about 6oz. Data service instead of pay as you go would mean my monthly phone bill rockets from about $20/mo to $60 or so per month. Not a good deal for me unless I'm touring for more than 3 weeks at a time. (unlike the netbook, spare batteries for the phone and camera are tiny and less than 1/4 the devices' weight, so it is lighter to carry spare batteries for really quite long trips)