The guys from Nokia Betalabs just put out a beta version of the Nokia Store QML Client.
This version is v3.22.044
Nokia Betalabs explains:
This release includes fixes for bugs found since the previous one and is now based on Qt 4.7.4 and Qt quick components 1.1
Feature-wise, this release offers the next generation of in-app purchase based on QML. This feature is available through applications that support in-app purchase.
So go ahead and try it out for yourself, go to Nokia Betalabs and download it for your Symbian Anna/Bella device.