No it won't do anything, and even if it does what'cha gonna do? While it's true to say that the blackbooks end up looking like crap in a remarkably short period of time, a little swabbing isn't going to accelerate that process much.
I get swabbed quite often, especially for some reason when travelling with an MBP. I've even had very conscientious swabbers attempt to draw everything electronic out of my bag. However, they usually give up at about the 20th item 😀