Not to sound like a fearmonger, but if I was living in Florida (or hell, maybe anywhere with a large, urban, African American population at this point) and had a CCW, when/if he gets acquitted, I'd be extra careful.
And if I was Zimmerman, you sure as hell better believe I'd want to find a way to get armed security. He gets cut loose and I'd worry that he'd have a target on the back of his head.
Maybe that's pessimistic alarmism, though, I don't know. Still my gut reaction.