to vfrpilotpb,
I own one so I'm a little biased (now quite a few of you out there know my identity!). However, it all depends on the build quality. The kit, as shipped from the factory is very complete and the build instructions are generally excellent - BUT, there is always room for people to ignore them/misunderstand something and it could be possible for mistakes to get missed on the engineering inspection. It's a hoot to fly especially as it has no governor, but just not at all practical. Limited power brings on a whole new meaning! It's a hobby helicopter for folks who like fixing as well as flying - I'm glad I got mine however - at least I will be when I get the Permit issued! (not as difficult as you imply).
As for the original question about pitch-up - it's possible to fly a quickstop by rolling off the throttle and leaving the cyclic where it is - the pitch-up flares the aircraft for you and keeps the NR in the green. Different!! Still don't know why it pitches up though!