I totally read ebooks for entertainment, however, for quilting, it would depend on the book. If it's instructional, but with only a few photos or directions I might want to have on hand, I will just print those few out. If it's something I'm just curious about but will probably never actually make, I will go ebook.
But if it's a pattern book with many I might want to make, I will buy the actual book. I try not to buy many now due to space limitations, so it has to be a very special book for me to buy it.