I've been to 6 Steelers games in Baltimore and one in Tennessee wearing Steelers gear, never had any problems. Once, in the late 90s after the Steelers beat the Ravens, a Baltimore fan said, at least we have the Orioles, Pirates suck, and I with my great wit replied, "So what? Baseball sucks, and so does Cal Ripken!" and started laughing hysterically! That was bordering on some anger by the Baltimore fans, but no fight happened, but definitely a proud moment and great memory for me
Last time I went to an away Steelers game was 2012, if I ever go again, I'll still wear gear, I'm not scared, even at 64, F'em if they can't take a joke