I was in Malaysia earlier this year working for months on end, I was still using my trusty Dell M50, which in its day was a decent bit of gear, but very heavy, in my backpack with all the other c*#p I had in there.
Everyday I would find myself doing some minor SLC changes as part of commissioning.
Anyway, long story short, I purchased an EEE, loaded XP, Linx and RSLogix on it to take up to the platform with me, direct connection with a USB converter, and away I went.
Saved my shoulders a bit of work (it was a bit of a walk up and back, in hot conditions)
Worked great, if I had to do any extended work, I plugged in an external monitor (there were heaps laying around in the platform offices)
Not the best screen size to use, but in a pinch, works great. If you turn the brightness down, and wifi off, you can get 3hrs out of the battery.
cheers
Charlie