avc,
I just took it on Friday. I studied as much as I did for any of the endorsements and I was glad I did. I was well prepared, and had no problems passing it, but there was another taking it at the same time and he failed quickly. It was based soley on the study guide, but the wording was tricky. Read the questions, then re read as they were worded as to catch you off guard.
I was relieved for the first time ever when I was being fingerprinted lol