Took it an hour or so ago. It took me about 20-25 minutes with no book. I'd budget 45 minutes if you like to check yourself with the books -- which I recommend. An hour if you take tests a little slower than average. There aren't any additional points for finishing fast, so budget an hour, check things out, and you will get a good score.
There are still a couple of questions in my opinion that are a bit on the vague side. But then, I missed a couple because I was a dunderhead, so I guess fair is fair. The best advice I can give is to BE SURE AND READ THE QUESTION AND ANSWERS VERY CAREFULLY BEFORE ANSWERING. One of my misses was a multiple choice that I got right, but there was a better right answer.
If you're nice to Mike, perhaps he'll let you download his brain.