Even though tablet/ipad/smartphones are created, it still cannot be able to achieve the comfort of working using our desktop computers/laptop. Yes, those are stand alone gadgets but if you're in a hurry and you're a report maker, then along with your tablet, you also have to bring your keyboard so that you can use it more effective and efficiently.
I've tried using both, and I still prefer using laptops, because the way I perceive it, tablets are made for entertainment purposes and "not so" for working purposes. (hehe), but I love my tablet anyways.