The cramfs and ipk packages can be mixed, so you do not have to install only ipks or only the cramfs images. You can for example install the ipk of xqt-gtk-jumbo and mix it with xqt-apps.cramfs, or install xqt-gtk-jumbo.cramfs and install individual ipks for the x applications. However, the xqt-openoffice.cramfs is too big to be made into an ipk.
I have updated the xqt-gtk-jumbo.cramfs and this is now how it looks like: