To be fair, although epub would be great for novellas and so on (which was confirmed by Chris Avellone on twitter),
I dont think Strategy guides or other not quite "booky" products would not be great to be read on an ebook reader, as you'd usually want to keep color and everything displayed..
And if your reader actually handle color, it's not a reader it's a slate and you have a PDF reader which would definitly do the trick.
But yeah for books / stories and so on, epub / ebook readers are pretty cool.
