I'm not sure if you'll be able to help with this - since it also involves TinyMCE, but any suggestions would be greatly appreciated.
I've added the custom styles into tinymce (2.0) to include the classes that come with this template. But the format you've recommended for blockquotes, e.g.
<blockquote><p>Text for blockquote</p></blockquote>
Doesn't work when using the styles dropdown in TinyMCE. This is because TinyMCE applies the blockquote class to a span by default.
Any ideas on how to not have it applied to a span, and rather do it as your template requires?
Also, for some reason, even when I apply it as you've suggested, only the left quote image appears. The right quote (or closing quote) does not. I've inspected the element on your example typography page, and I can't find a difference between my implementation and the example.