[Jellby]

Originally Posted by Tex2002ans

Do you happen to have any good samples of SVG being used in EPUB?

Not really, at least not for pictures... Testing in my device is not the most convenient, and I haven't really found the need for it yet.

For example, how would you go from an SVG of Red Apple (U+1F34E):

http://www.fileformat.info/info/unic.../red_apple.svg

to getting that SVG working/scaling in an EPUB?

That SVG is actually pretty simple. If you open it with any text editor, you'll see it's a single path, and it does not seem to have any hard-coded size that would prevent it from resizing. Maybe the font-size="12" is the culprit, or maybe it needs some kind of width/height.

And let's not forget that readers are buggy anyway.

Or maybe a tutorial on how to use Inkscape to bash the SVG to your will?

For that, nothing like the XML browser in Inkscape, you can see the structure, remove all unnecessary objects and rearrange the others.