On my Evoker FvS, the main use I have for Quicken is to speed up the casting of Blade Barriers. That is not needed as much anymore, as the new casting speed is fine by itself. And since I have around 50 Concentration (the Ornamental dagger helps with this) along with the 10 DR I very seldom get interupted.
Of course it is still handy (especially if you kite in ToD part 2, or if you play a melee FvS who takes bigger hits than an Evoker) but I have hardly used it in Update 9 at all. So now I'm thinking of switching out Quicken for something else. Anyone else thought the same?