Found this today after an intense discussion about the pros and cons of buying a rather expensive web security gateway. Still feel uncomfortable with a closed source solution from a big vendor, and the security consultants could not really explain what the benefit will be. But looking at these sales budgets I'm not surprised that management was already biased.
Found this to be an interesting read, although a bit superficial.
Having worked in the industry as a consultant, I detest these snake-oil practices, and it always bewildered me, why companies were so prone to throw their money at these kind of 'magic' black-box solutions. But I guess, it's just another CYA strategy.