I also just installed Acrobat on my Gentoo system with version 4.0 of Crossover Office Standard. It installed fine and works great for opening PDFs and browsing PDFs (I've got Mozilla Firefox hooked up to launch Acrobat 5.0 when I hit a PDF on the web--no problems).
As mentioned, the "save as" doesn't work and, in fact, causes Acrobat to crash on my system. I haven't tried the workarounds yet but will give that a shot.
Thanks