I am still waiting on the one I ordered to come in. But I have used it before and I love the sound, it's a little bit more fake that the other warwick basses when it's coming from the pickup only, but with the piezo and the pickup combination the bass has an astonishing great sound. Some dealers in Europe carry one or two in stock, you should try to find one and play it for a little while and see how it feels. If you are not in Europe, some dealers in the USA also carry them, but those are less.
I definitely want to hear how these sound too. I haven't found a store near where I live that actually has one in stock, so I haven't been able to try one out. I had an NS Designs EUB (regrettably sold it a couple of years ago), and was planning on getting another one this summer, but it would be cool to get the Warwick instead.