Haven't seen it or used it. Seems fairly decent for what it is, and the price it is. The software that comes with it I'm not too sure about but apparently it's full MIDI compatible so you could use it with traktor or what ever software later on.
Probably lots of fun just to do some basic djing, don't need to bring lots with you. Intended for those who basically want to play tracks and have a good time, no intense turntabalism or live remixing. Mind you it does look a bit tacky and cramped 😛 .
This thing is getting lots of publicity because it's sold at the apple store, there are other similar products that might be worth a look.