I'm not sure I'd feel comfortable using that unless it had a small finger guard added on either side of the blade. Even with the wrapped rope for grip, it'd only take one slip to cut your fingers pretty good.

At that size, you're better off using a mezzaluna.

can't believe I had to scroll down so far to see the only real answer for the best/most effective one. All the other ones are just spot welded on and the disc won't spin. Only downside is if you're trying to cut something like a deep dish but at that depth all of them will have issues.