Thank you holroy for your pointer to AlanG his posts!
I now have something working with async dv.io.load(), but I really don’t like it from a code cleanness point of view. Feels like too much overhead, but then again, it’s an Electron app, maybe I’m to oldskool 
Apparently the next step, embedding the retrieved Markdown content, also seems a challenge in dataviewjs, see Issue 177. Some routes others tried.
Funny enough I was already playing with loading Showdown.js, which makes it even worse from a code cleanness point of view.
Never looked into creating a plugin, but that might be the only clean route?