The iPhone J.D., Jeff Richardson, has this great post on how he uses transcripts in trial. Since he just finished a pretty robust trial, I’m sure his method is a-plus certified and tested.
One thing I love that he mentions, which I forgot, is the fact that tablets have more battery life than laptops, and require little or no cords to operate. Their compact design means you won’t have to heft file boxes full of depositions or transcripts to court. Although I don’t completely think that full paper copies of depositions are required (after all, you have the “certified” copy for each of yours), I agree it’s probably advisable.