This is close to my experience. I still use it but less and less, the laptop is so much more flexible and powerful and really just as convenient around the house, even more so at times since it stands up by itself. The big win for the tablet form factor is as a book reader and for traveling because of the great battery life.

But considering how many of these things they continue to sell I don't know if these anecdotes really add up to data. It really is permanently replacing a computer for a lot of people.