Once dropped in you get partial support for SVG 1.1, SVG Animation (SMIL), Fonts, Video and Audio, DOM and style scripting through JavaScript, and more in about a 60K library. Your SVG content can be embedded directly into normal HTML 5 or through the OBJECT tag. If native SVG support is already present in the browser than that is used, though you can override this and have the SVG Web toolkit handle things instead. No downloads or plugins are necessary other than _Flash_ which is used for the actual rendering, so its very easy to use and incorporate into an existing web site. [emphasis mine]

I'm curious as to why they did not translated it to VML like excanvas does. I guess there may be parts of SVG that's a poor fit to VML, and Flash also will make it possible to have it work with any browser with a flash plugin, not just IE.

I think it's because VML is slow, and probably it misses some features to properly emulate SVG.

thanks, my reading skills are a little lacking today it would seem.

I haven't looked at their code (though I will definitely try this project out soon!), but I'd guess that their javascript library is parsing the SVG then dynamically replacing it with a flash object. I've seen some type-layout libraries that do the same thing using Flash, so that you can use non-standard fonts on your website.