This sink is amazing. I have had it for about 6 months now and here is my honest opinion. 
1) DEEP. DEEP. DEEP. I can put all my dirty dishes in this baby and leave my counters clean! :) 
2) It retains heat.  The properties of the stone help the water in the sink maintain its temperature. I can run water, then go back later and the water is still warm after having set for a while. 
3) GORGEOUS!! Everyone loves this sink and its a highlight of my kitchen remodel. 

Downside...1) it's heavy. seriously heavy. 2) a bit of protection to prevent chips wouldn't be a bad thing. 
Other than that! It's a winner