Couldn’t have come at a better time this article as I’m about to use SVG now for my new logo on webflow.
Maybe @thesergie and @brryant know if this is a good idea or not, or in the near future they could add in something down the image panel settings if a user uploads a SVG file that makes another row appear under your uploaded SVG file saying “upload fallback image/png” with another upload button - that way its best for all website viewers.
I don’t know how easy that would be of course 
Cheers