I think this will hurt attorneys more then journalists. If an attorney cannot communicate with his client in confidence then he will not be able to properly represent him and give him the best advice.
Perhaps, in a court case going up against the NSA or govt overreach but not so much in mundane hearings over criminal stuff that isn't really on the radar, typically. I'd say journalists have more to worry about as their jobs are supposed to be the watchdogs of govt antics. Could go either way I guess.