Orion Speakers truly great or too finicky

These speakers from Mr Linkwitz appear to be a very interesting proposition.Having attempted to build an active loudspeaker myself with some success (though not entirely happy), I would be very appreciative of any impressions/advice from fellow inmates about his speakers. I would especially like some assistance in possibly aditioning this system or in purchasing a kit in which the electronics are already assembled. I am happy to try building the cabinet if I can get a hold of the plans.
I live in Sydney Australia.
Thanks again