Great for unhooked? Never heard anyone say that about the pivot before. I also own two of them and because of the sheet and go unhooked powers it right up. I would say it's not great at unhooked.....unless the quadtech changes things.
I think they may be referring to unhooking in down the line wave riding. Regardless of that however, I find you can still unhook with the Pivots when riding freestyle. Due to the drifting characteristics though, the slack line is almost non existent making passes more difficult. You need to load and pop with a fair amount of effort compared to a C oriented kite. I ride 95% in the waves now but the 5% free riding I get to do is awesome 
The Pivot is definitely ok for unhooking but not really suited to passes. Throwing a Railey unhooked rotation it works really well. Down the line the kite drifts well unhooked.
