> The bigger thing though is that they're a pain; you have to clean it out when you're done (also: have it handy on your counter to begin with), as opposed to just wiping down your knife, which you're already using for other things.

I agree that cleaning the food processor is more of a pain than cleaning the knife. On the other hand, using it is far less of a pain than using the knife (especially in cases like this where you're trying to get even, small pieces). So you're really trading off one pain for another. It's not clear to me that either option is the obvious winner or loser here.