Something Ryan Cumley mentioned in the aforelinked article about using his iPad as his work setup was not just that he was able to get most tasks done on his iPad, but that working from the iPad was noticeably less distracting for him. Cumley said:
I find myself markedly more deliberate in my actions, focused on completing the short list of productive things I have to do, and less prone to distraction.
This is something that I’ve found true of working on my iPad as well. Last summer I touted iOS as the best piece of anti-distraction software I own.