First of all, it needs to be said that whether you deal in perception or reality, a press conference with the NY media is a show more than anything else. You're putting on a display for the reporters. That doesn't mean that everything Idzik said is scripted BS, but it doesn't tell you much, if anything, about what's really going on behind the scenes. So to make definitive statements about who the guy is (cap guy or otherwise) after his introductory press conference is incredibly presumptuous.
And another big misconception is to assume that Idzik is meek simply because he's more soft-spoken than our brash head coach. Being soft-spoken and being a tough, effective GM are not mutually exclusive things. Nothing he said about his plans or his background gave me the impression that he's a pushover.
We'll only know for sure what kind of GM we hired when we see the product on the field. But then again, that would've been true no matter who we hired, be it Idzik or Caldwell or anybody else, so let's not trip over ourselves jumping to radical conclusions.