Here's an ebuild for SIP 4.4.1, the latest stable version at this time. It is a bugfix release of the 4.4 branch. That branch allows both PyQt 3 and PyQt 4 to be installed in parallel, hence my need for it. This ebuild is based on that for SIP 4.3.2 which is currently present in Portage. The SRC_URI needed to be updated, and the "-l qt-mt" option removed from 'myconf'. That's all. :)
Created attachment 83972 [details] dev-python/sip-4.4.1.ebuild
in cvs, masked for now.