Nifft
Penguin Herder
So far as I can see, you are still able to use a single staff as two implements -- adding its Enhancement bonus twice to damage -- if you have both feats. Does that answer your question?is this still up to date ? (i do not have the char. builder at hand to validate this)
Looks like they fixed the hole where your Sorcerer has a Bloodiron Dagger in his main hand and a Staff of Ruin in his off-hand, which is good.Staff of Ruin Errata
Using just one Staff of Ruin + Staff Fighting + Dual Implement = 3x Enhancement damage, which is not bad at all.
Cheers, -- N