That tail clipping by the inkscape rasterizer is pretty odd. I can get it to go away if i adjust the dpi settings to 70 dpi instead of the default of 90, though. Perhaps a bug should be filed against inkscape?
edit of the svg? please do. i think another thing that would be good to do with the svg preview is to destroy the png export after the jpg thumbnails have been created from it. the png looks a lot better, but it could be a pretty big file.