Yeah not much has been done to get svg to work with Webgl, and there's several reasons for that.
Svg can be quite compact when drawing simple shapes programmatically, however it can also get very difficult when such things as complex splines, merged groups, and blends, etc are added. Those issues are then multiplied when you think of transformations. Top that off with the only way to introduce them is to turn them into either quads or triangles.
So basically we should be able to get some support eventually, but like everything else it will have to be optimised out the wazoo.
A simple svg to png is doable now, but don't count on transformations anytime soon.