Someone on the SVU subreddit asked who would win the battle of the rolled up sleeves, and IamtheBrookstick had the absolute best take:
When Stabler rolls up his sleeves, it means someone is about to be the victim of police brutality.
When Barba rolls up his sleeves, someone is about to get blindsided by a devious legal ploy.
When Amaro rolls up his sleeves, we have reached the serious part of the episode.
And when Carisi rolls up his sleeves, it really doesn't mean anything. He felt like rolling them up, he was a bit warm, who knows?