I dont see how project isnt worth using. Granted all i do is pvp and I dont hit dummies cause dummies no hit back. But my project crits for 2.8 - 3k plus another 1.4 - 1.5k when it procs a 2nd rock. I run many different full Balance specs and I find Project to be very useful.
I'd recommend reading the post I linked. It didn't say not to use Project, it's just low on the priority list.
It has an excellent explanation for why.