How does it look when previewing?
Hype doesn't make any changes to your SVG file. The thumbnail generation is slightly different from how the scene area is rendered, but the best way to discover what SVG features are supported is to preview in a browser.
In my quick test, things seemed to work well so it would be helpful to see your SVG + Sketch file if you can share.
test-blend-sketch.zip (6.8 KB)