"Faults": the D grip handle has a grip that sticks out 90 degrees in front of it, it feels too weak and flexes if you're using the tool's full length with the extension. ....
I just watched this video and noticed the handle they've got in the USA is missing that bit which I said seems a bit weak
Edit: there are at least thee different handles:
With (version sold here)
With (possibly with a green flip up lever to quickly adjust the position?)