All of us here study the Bible on the computer. How many of us preach and teach with it, too?
How many of us actually take a notebook, etc. with us as our primary resource in public speaking? 
Personally, I use Powerpoint for almost every sermon I preach to display outlines and illustrations on a large screen, but I always have a print Bible on the lectern or pulpit. It's too hard to "page through" verses with a laptop, and too much risk of a digital failure.