Perfectly valid, but it won't evaluate as a full SVG document, just as the initial document snapshot. Kind of like loading a webpage with scripts disabled, you'

Perfectly valid, but it won't evaluate as a full SVG document, just as the initial document snapshot. Kind of like loading a webpage with scripts disabled, you'll see "something", but that might not actually be what the document was designed to look like at all (so if you're using SVG as <img> source, only static SVG documents will look the way they're supposed to).