[nwh]

Could QT be made to look as pretty? QT based apps are notoriously hard to work with on OSX, they never quite manage to fit in at all. That said I can't get this one to function at all, so it's a moot point as far as usability goes.

[jeorgun]

Replicating web-style prettified UIs seems to be one of the major goals of QML. In any case, if your alternative is an HTML/CSS/JS/Node application, I don't think replicating native look and feel is really that likely to be a sticking point.