I've heard mixed reviews about this one. I've not seen it myself, but I have other Mikame items and they're nicely made. I hear the rope board is nicely made too.
The big criticism I hear is that the effect is not nearly as clean as the advertisments suggest. The advertisements make it sound so clean and direct: You write on a chalkboard and then pull off the chalk, turning it into real rope. From what I hear, you have to wrap up the chalkbaord in a newspaper, set it on a table, and then pick it up, leaving behind something on the table. Something like that.
I got excited when I first saw the ads. Then I heard from others what it really is and decided not to get it.
I hope this helps you make a decision. Others will most likely be able to give you better details.