Yeah, it's weird how when I'm travelling with someone else I can get my friend to take my carryons if I'm SSSSed and thus anything in those carryons won't get searched. security.
Plus, at some large airports, if your BP shows SSSS the initial agent who checks your BP/ID will tell you to go to lane 1 instead of lanes 2-10, but I've noticed they never look to see where you go, and usually nobody else checks the BP afterwards, so technically an SSSS person could just go in the normal line without much chance of getting caught.