I made a few rides with the Cowboy 3 and absolutely enjoyed it. It runs smoothly, with and without using the engine, and looks pretty cool.
There is only one thing I am disappointed about, I miss the offroad modus to enable electric support up to 30km/h. During my test ride, it was activated. And it was also one of my main reasons to buy the Cowboy 3.
I hope it will be availiable again in the near future.