Combination of font icons and sprite?

Question

css

There was such a question, is it possible to combine font icons (fontawesome) and png sprites? For example, if suddenly the browser does not support third-party fonts (opera mini), then the sprite should be loaded.
For fonts in css, this is implemented using the format
url('font.woff') format('woff') element. If the browser does not support it, then it does not try to download it. If no font is loaded, then load the sprite