It all depends on how you act on the ice. If you are a good guy and don't act like rat is game 7 of the Stanley Cup then you should have no problems. If you are a bit of ***** then people will start to chirp and probably use the jersey as ammo.
Let me give you an example:
I am playing in a rat with a guy who is wearing a full Mario Lemieux kit. Now I notice this from the start and in my head I'm thinking this is kind of ridiculous, but there is no way I'm going to chirp him for it. I don't really like chirping guys I don't know. Anyways during the rat he is playing real hard and at one point I'm skating into the zone and he steps right in my lane. I end up hitting him full speed as I have no chance to stop. Right away I go to check on him and I ask him if he's ok. He's pissed at me and tells me that his knee is not supposed to bend that way. I want to tell him to chill it out, that it was an accidental collision, and one that was his fault, but I bite my tongue. Then throughout the rest of the rat he starts playing a little chippy. So at one point after a slash or something I say, "Why don't you ****ing cool it Lemieux." And a couple other choice words about his full Penguins kit. You could tell that really got him b/c he shut up and did cool it. My guess is that he was thinking the same thing you were. He was thinking should I wear this or will I get chirped. Well he would not have if he wasn't being a dick, but since he was I felt like embarrassing him, and I know I did.