E-Z Reverse?

Anyone know anything about this E-Z Reverse I saw listed for sale on Ebay? It sounds like a good idea but I would just like to know how it works and possibly talk to someone that has used it before I get one. How does it work and would anyone recommend it? Thanks.

I am sure they work fine. You can easily make one yourself with a plastic wire tie. Hold the red button down, pull the brake lever back, release the red button and then put a plastic wire tie around the cable for the red button. This will not allow it to return to its position and you will no longer need to use the red button to go into reverse. Good luck.