That's exactly what you said before, and I'll say the same thing again.
Not according to G employees at the G forums.
That article by Fox is from 10-2006,
yet long after that, the G employees in the forums are saying dynamic URL's are not a good idea because they can be problematic.
Information from G is always flaky. The left hand doesn't know what the right hand is doing. If posts by G employees at the G forums are saying they are problematic and can cause some issues, I wouldn't take the risk and gamble with it.