I saw on Slashdot today that Acroread 7 for Linux is on their FTP server, so I grabbed a copy today. The download is indeed a bit large (39M), but the rpm installed flawlessly on my redhat9 box, and the startup time is short. Practically instantaneous. I do have a mighty cool box (except for the redhat9 bit), but still.
It looks very pretty. It uses GTK as the widget set, but they messed with it a bit. The tear-off tabs at the tops of menus are gone. Not a killer, but it would have been nice to have.