Well... they'd have to make some major improvements if DJs were going to use them on a professional level. But look... there are CDJs all over the place.... people scoffed at that idea for years and it has become reality.
Personally I prefer vinyl. I used to prefer SLRs over digital cameras but I finally gave in and got a digital and I LOVE it! It'll be interesting to see where this goes... if it goes anywhere. I'll hold off on making a judgement till then... they've got a long way to go.