A KDE (QT) app can never be fully Hildon-ized, since Hildon is GTK+, unless the app is ported from QT to GTK. The best you can do with getting those apps on Maemo is a) just getting QT over, and putting up with them maybe looking/acting weird or b) ditching Maemo/hildon completely for a desktop KDE - I know there are folks who have done that.