switching from suphp to mod_ruid

I am always paranoid to make any serious changes that I don't totally understand on my server, so when I got a security advisory saying that: [QUOTE] Apache vhosts are not segmented or chroot()ed. Enable "mod_ruid2" in the "
I wanted to know if there is anything I might break if I disable suphp and switch over to ruid? I have about two dozen sites running on the server, all running Joomla or Wordpress if that matters at all. One account DOES use mailman but the others do not but it sounds as though the CageFS is not necessary so hopefully that won't be an issue?