Poseidon- I ride Gun in a yacht rope crossover like that, and he adores it! He took a second figuring out the push/pull turning, and it does take a slightly stronger arm to get him to stop (as it's one to one pressure), but I just basically have to move my arm rather than just moving my wrist with his mechanical hack.
I highly recommend trying them, especially since he's responding to a rope halter.
"Sit tall in the saddle, hold your head up high. Keep your eyes fixed where the trail meets the sky. And live like you ain't afraid to die...don't be scared, jut enjoy the ride." - Chris LeDoux