Well there were a lot disparaging remarks about its design when it came out, but I think they are over-reacting. Sure it bears some similarities to other basses but how many well respected basses are based on either the P or the J? There are certain fundamentals that have to be in a design to make it usable. I have been thinking about getting the five string which is at a knock down price at the moment, presumably because it's not selling that well after all the negative criticism.
People on Talkbass in the USA seem to like it.
Enjoy it.