I think I will get one of these
I built my own out of an aluminum tube, a couple of Gardena hose clamps and soldered my own cable. Wouldn’t recommend it though as I’ve probably used almost as much money on as the one you linked. And a lot of my spare time as well. Still not sure if it will hold in the long run either 
and the result? did you notice a big improvement?
I’ve extended it with approx 100 mm. It’s certainly not worse and it’s easier with smooth movements. Other than that I actually don’t know. With my setup the original stick would also be too low to hold comfortably.
ask also Gb he’s using one of those also…
Just got mine 
Fired DCS P51, set curves to linear, moved stick from my right to between my legs.
Maybe its just coincidence, but I have made the 2 sweetest landings I have had in a long time
Will keep you updated.