librep-0.91.1-4.fc15, rep-gtk-0.90.5-4.fc15 and sawfish-1.8.0-2.fc15 are now included to Fedora 15 stable repository. Use normal "yum install sawfish" command to install.
Sawfish-Pager is still in todo-list and will take some time (bz#697049). Test-rpm is available at: http://b.bbbs.net./sawfish/