Have you done any benchmarking on how this compares with Electron on things like binary size, memory usage? Those are usually most common complaints people have with regards to Electron so would be nice to see the improvements this provides.
From what I understand, this will avoid that problem by compiling to whatever native platform you are building for? Also it'd not just be a webapp in a shell.
For some people in some senses, there's a big advantage to the 'webapp in a shell' model, because HTML/CSS is considered good, or WhizzBang.js is the familiar tool for building UIs, or whatever.
I didn't mean to say it's better (or worse) than this - it's just quite a different (more similar to Electron) approach, that'll suit some and not others.
Electron is hundreds of megabytes for "hello world."