Which type of user is most likely to require a tablet PC?
Casual I would think. Anything more than casually using a computer is a pain on Windows 8 (Or any other tablet software for that matter) and that would always restrict you.
I would also have to look into how well those detachable keyboards are. If they are a pain to type on that could make a difference as well.
A tablet computer, also known as a Tablet PC, is a laptop that is equipped with a screen that reacts to touch in some way. Almost all Tablet PCs can be controlled using a stylus type pen and some Tablets react to touch from any object, including a finger. Most commonly used in business settings, Tablet PCs are meant to simulate pen and paper.