So, a while ago, Gentoo user nxsty (aka Simon) put together an overlay for an enhanced Qt, based on the KDE snapshot qt-copy. The snapshot contained enhancements to the free Qt provided by Trolltech.
Nxsty has since moved away from Gentoo, and this left the overlay in limbo, without a maintainer. There was a copy of this build included as part of the pertty overlay, which I once helped maintain, and is now included in the xeffects overlay.
To help keep this alive, I have spoken with Nxsty and figured out how to get new qt-copy snapshots. These new snapshots are now alive and kicking in the xeffects overlay as of qt-3.3.8.
To find out more, check out my post on the xeffects forums.