My driver works with the Evo now but, as Lars says, it requires an app to run on the Evo that opens up the connection. Chessnut sent me a very basic version of the app so that I could try out the connection and find any faults, but overall it works fine.

It doesn't yet show anything on the Evo screen but I'm in touch with Chessnut to try and find out when they will complete this. There are different ways they could do this, though, like trying to see what is on the GUI screen, or my driver saying what position/moves to show, or them reading the position/moves from those made on the Evo. So it might take a while but it is on the way!