I love mine.
While its not the traditional thumb sound, mine does sound like a Warwick. I doubt you'd mistake it for something else.
When I had improved my skill enough to know what I liked about a bass, I scoured for a year trying to find something that combined what I liked.
The Bleach Blonde, IMO, is a cross between a thumb and the ash bodied corvettes. It takes the warmth of the pro-series corvettes and tightens up the notes and adds clarity. Depending on how you look, you either lose a little warmth, or you lose a little compression. I don't look at it that way though. To me, you find a happy medium. I personally think you get some truly amazing ringing highs with a maple board and those brass frets. I personally havn't found a G string yet that I think sounds sweeter than the Blonde's.
It plays like a bolt on thumb. Its very much lighter, since its ash and maple. The rest is like a regular bolt on. The Adjust a nut 2 and the bridge is just amazing, I've never had so much ability to tweak my setup. Expect the neck to be the thick neck that thumbs are famous for, and that I personally love. The reason why the 2003's are cheaper is because they use the usual Bolt-on electronics that Warwick has ditched for the 2006. The construction is top notch. The flame maple top is actually 2/3's of the top, its not just a thin cap like the 2005 Hot Rod Corvette. The fingerboard has amazing flame to it, and feels wonderful. The neck isn't glossed, so your hand moves fast and sleek around it. The body is not oiled, it is satin finished, so that's either a plus or a minus depending on who you are. Just remember the US swamp ash is a VERY soft wood. Jean buttons, and especially belt buckles are the bane of many bass, and this is no exception.