A while ago I posted on the useful apps for the ipad. Since then I have started purchasing my gaming book digitally. Not only is it cheaper than buying a physical book, but I am able to carry multiple books, essentially, in the space of a single book. I do prefer reading a hardback book. Years of practice have made me adept at finger bookmarking for quick reference, but the e-book is slowly taking root in my being.
While perusing the internet, I came across an entry for the 'Song of Ice and Fire' RPG. This listing was for the tablet version of the game. It appears to be a PDF so I'm not sure how the "tablet version" handles better than a normal PDF. I'm normally against laptops, but I high recommend (flat adverb intended) using PDFs and tablets at games.