The advantage and disadvantage of a touch screen, in my humble opinion, are your fingers. Using our fingers comes naturally to us. Touch provides a very intuitive experience. The big disadvantage is the Fisher-price like users interfaces required to drive touch apps. Our fingers are too big to allow the UI any data density. There’s the problem – data density. Any knowledge worker worth their salt uses dual screens on there work station for precisely this reason. More viewable data. I can’t see workers giving this up for the few lines available in a FP touch interface. On the hand tablets as a replacement for all those printed documents you get in meetings is totally do able. It’s a question of use case IMHO.