Never owned an Ipad, or likewise gadget. But seems to me, that as a GM having such one would make many things a great deal easier.
Of course, I'd never spend that kind of money on something, just to GM... but apart from the other uses, GM'ing seems to be something it could help do. Now I know people will think that it's a bit excesive, and that the feel of books etc... but I for one play at a friends house, with very very very limited room, and I'd also like to be able to transport everything, AND my laptop to my work while riding a bike, without the bike collapsing due to the weigth of it all 
- Especially now that the guides are comming, you can now have all the rules in one small gadget, easy to flip through, and search for them. I assume they're releasing them as PDF as well... I'd buy those anyway.
- Applications. They allready have the dice roller (which could use an update, for example with a roll-button...). Apart from that being able to fill out creature/NPC cards, like some allready do with that Strange Aeon (spelling...), so you can have all that easy accesible as well. So if we'd see more applications like that, for warhammer, many things would be smoother for the disorganized GM...
- Also would be nice to have all action cards/talents there as well, and with char sheets that you could attach the talents to, all sorts of stuff!!!
Of course, this would not be possible if the guides were not sold as pdf (I refrain from pirated downloads, apart from 1st editions, which... well... not sold, so to me the only way of getting them), and if they had no more plans for applications dedicated to this.
Any thought/comments?
