As a grad student, it works alright for basic note taking, e-books, browsing the web and the like, and I really like the fact that it is so portable given the battery life and miniscule weight. If you grab a bluetooth mouse and keyboard, you actually can get a pretty nice set-up going for basic functionality. However, I've noticed that my productivity for anything more in depth than what's described above has completely tanked. Sure, you can edit documents and store them in Dropbox for later, but you still have to go back and edit them on an actual computer to apply advanced styles or fix anything the tablet corrupted. You can't view applications side by side and must continually switch between them. Furthermore, some apps are just non-existent. I'd love to see some apps that could actually compile code. The only one I've seen do this successfully is AIDE for Android, which is catered towards actual Android development. I have yet to see just a basic C/Java/Python compiler for command line style programs, but the fact is the tablet is just not designed for that kind of work.
While I get a lot of use from my tablet now, basically because I have no other choice for this semester, I will be buying a laptop to do my main work. I'll keep the tablet as an e-reader.