I haven't been to enough games to make a qualified opinion, but I'd be quite surprised if visiting fans at Jerry World didn't have a good time. In our case it's partly Southern hospitality, and partly that Dallasites just don't care all that much. Comes with not having much of a football culture. I've long maintained that most Texans wouldn't tolerate visitors being harassed like that, and a person on the bad side of it would quickly have a whole lot of allies on their side. That said, mob mentality and overpriced nasty beer are definitely variables that might change the math a bit.
Also, the game I saw at Foxboro had plenty of Texans fans, and they seemed to be alright.
In both cases it's likely to be nothing more than a good-natured ribbing, and that's exactly how it should be. I suspect visiting fans probably want a little bit of razzing, so long as it's done in a good-natured manner.