Unfortunately, the workaround specified by vaifrax only works on paths, not clones of paths like I have. :(
In my case, the path specifies the outline, but leaves the stroke unset. I then create two clones. The first has a thin black stroke. The second, in the the background, has the blur and a wider white stroke. This effectively creates a complex stroke that SVG itself doesn't (yet) support.
Also, stroking the path makes it harder to edit down the line. You have to keep a hidden copy of the original path, locate it when it's time to edit, and restroke it.
Unfortunately, the workaround specified by vaifrax only works on paths, not clones of paths like I have. :(
In my case, the path specifies the outline, but leaves the stroke unset. I then create two clones. The first has a thin black stroke. The second, in the the background, has the blur and a wider white stroke. This effectively creates a complex stroke that SVG itself doesn't (yet) support.
Also, stroking the path makes it harder to edit down the line. You have to keep a hidden copy of the original path, locate it when it's time to edit, and restroke it.