Hope you can make it Pittdawg!
I'll echo the comments of others here. The Skins fans aren't bad to deal with.
There WILL be fights at the game, but those always involve Cowboys and Redskins fans who are mutually looking for a fight. You're not going to get "jumped" like you might at a Philly game.
I always wear Cowboys gear and cheer loudly for my team and I've never had anything more than some mild comments and jeers thrown my way. Our tailgate always has a lot of Cowboys fans there, and we'll get into some fun trashtalking with the Skins fans nearby, but it always is fun and good natured.
There are some wannabe thugs that Hos mentioned (the DTC) but they tailgate in a specific spot. But that's why I keep the location of my tailgate a mini-secret. Just give me a call when you get close to the stadium and I'll let you know where we are.
Also, keep in mind that there will be 15-25% of the crowd rootingn for the Cowboys, so you'll be in good company and have a good amount of back-up.
Central Loudoun (Virginia) Cowboys