I wouldn't worry about the bandana, but when they see your ball-gag and handcuffs, the line of questioning might take a turn...
Kidding...
Sorry, I have nothing of value to contribute, other than that the likelihood of the perp hunting you down is probably very, very slim. If it gives you piece of mind, you could always consult an attorney for advisement on what to expect in/during/from the proceedings.
ETA: Saw Chunky's posts when I refreshed, and that sounds like good advice.