I've never really tried it, but I don't think it's something for me. I like to read and a part of that, at least for me, is to take my time when doing it and just relax, y'know.

I know you can also relax and take your time when listening to an audio book, but after you've heard the whole thing there isn't gonna be the same feeling of satisfaction as when you've just finished reading a book - because when reading you actually put some work into it, and so in the end I think it's much more rewarding to read.

But sure, for busy people who don't have the time I suppose it's a nice compromise.