I've been using the SVG component from the related Trailhead Module, and it doesn't display the icon with LockerService activated.
I understand from this question that innerHTML is read only, thus the line svg.innerHTML = '<use xlink:href="'+xlinkhref+'"></use>';
isn't executed as we expect and icon isn't displayed.
With the upcoming support of svg tag that's fine for me, but in a more global question, is it ok that this line fails without any error being displayed ?