I do want to play around with QML, but for now I am just using the ui designer in Qt Creator. The UI and the guts are tied together via signals and slots, so it wouldn't be hard to switch to QML. But I don't have a compelling reason to change it right now--I'd rather focus the time I spend on this toward adding some more features.

Besides...I am not artistic enough to make good use out of QML...whatever I do will still look like a nerd designed it whether it is on QML or Qt Designer or whatever.