ive wanted to try one since i saw them, but @ that price (in us dollars especially) i just cant justify it, no matter what the tuning ability!!
i wish i had one though, so i could "backwards engineer" it and sell them on the CHEEP it cost me less than $2 to make a clone ltr xr puck adapter(sorry ltr) and a pv "spacer" would only take a few minutes to program into a 3 axis machine, heck i could do it on my milling/drilling machine, same with the fancy aluminum brake/clutch covers!
i made my own (venturi) bolt , and ball detent for my paintgun when i was 10, im sure i could still do it with 16 years more xp!!!!