@pleonasm - As long as they don't try to read Ulysses while on holiday. The downside to reading almost any kind of literature while you're on holiday is that it might be either very difficult or very depressing (or both!) I do think it's a great idea to read books that relate to the country that you're in, but make sure they are going to be books that you can enjoy.
Personally, I would go for poetry or short stories instead of trying to read novels. In my experience they tend to be a little bit less likely to end with everyone dying and they are short enough that you can keep your mind on the sights rather than constantly wishing you were back in your hotel room, reading one more chapter.
I also don't think that enough people read modern poetry. There's some amazing stuff out there, but they only ever get taught the older, somewhat stuffy classics and never realize what else there is to enjoy.