Thanks for the feedback!
Yeah, I saw the typo in the image after Douglas pointed out the Asymmetric Encryption typo. I also mis-spelled "voila" as "viola" early on. That's what I get for trying to edit these things late at night without enough caffeine in my system [My kingdom for a Mountain Dew!]
You are right of course SQL Server can be configured to use SSL to secure communications between clients and servers. The reason I glossed over the Asymmetric Encryption discussion was because this article is really a further explanation/continuation of the toolkit article, and the toolkit provides only Symmetric Encryption tools. I do believe Asymmetric Encryption needed to be mentioned to round out the discussion, but I found out pretty quickly that a decent treatment of Asymmetric Encryption really would take a full article by itself. And that article would really have to delve into the mathematics, which I was trying to avoid in this introductory article.
For those interested in pursuing the asymmetric encryption model, the Schneier book gives a very nice treatment of the asymmetric encryption, including several excellent examples of how it works in the real world (or, in some cases, how it should work...). Wikipedia also has several articles on asymmetric encryption, RSA and SSL.