Giant fans are tough but ultimately OK. I've been to Giant stadium a number of times...the last being the 35-32 Monday night game...I wore a Cowboy's jacket and had no problems.
I was also at Texas Stadium for a Redskin game.
There was a guy a couple of rows in front of us waving a rather large Redskins banner and no one gave him a rough time.
Philly is only a hour or so from NYC. I've been tempted to go there for a Cowboys game but haven't because of the rep Eagles fans have.
Last night couldn't have happened to a more deserving home crowd.