(as a reply to: https://css-tricks.com/svg-use-with-external-reference-take-2/)
While I love SVG (sprites) there are a lot of issues to take into account.
Advocating The Most Accessible Markup
UPDATE: you should take a look at https://dl.dropboxusercontent.com/u/145744/accessible-svg-icon/test.html which seems a simpler and more robust approach
Another thing: since people copy-paste our code examples it would be great if we could advocate the most robust and accessible markup IMO. I am no a11y expert, but in my understanding we could/should take some extra steps to make out SVG sprite icons more accessible.