I personally can't table hop yet, for I am too young. Much of the stuff I do is strolling magic though, and I do occasionally use a chop cup. The only complaints I have with them are that unless you are doing something like Dan Tong's version, the final loads take up much space in your pocket. Also, sometimes the cup will attract things you don't want it to. Once I was performing it and a paperclip came out! So, hope that helps! You going to try to market it on penguin?
Not familiar with Dan Tong's version.
I address the problem of too much pocket space being used.
As far as the cup attracting things that you don't want it to, that's a prop management issue more than the cup, but my alterations should allow you to catch such problems before they become noticable.
As far as selling it on penguin, probably not. I have 2 sites in mind, but nothing is set in stone yet.