Could I use a 64-bit iPad 5 or a Surface 2 as my main work computer?

As we get ready for the next batch of Apple announcements (most likely the iPad 5 and a new iPad mini) on October 22, there’s been some discussion about whether the iPad 5 (which will likely sport a 64-bit processor) can do the heavy lifting of a main work computer.

To be fair, we’ve covered the iPad (and tablets in general) as work computers before, and — depending on what you do for work — the answer has been generally positive.

But I wanted to see if I could use an iPad as my work machine. Could it handle the breath of tasks my current Windows laptop does easily, or would I be left out in the cold, unable to get the job done?