Revision 33266 has some extra work done. InfiniBar has been massively optimized, greatly reducing memory costs. The pet bar is now fixed and added to the GUI. Macro Icons should now display correctly.
InfiniBar is usable if you are fine with the bugs that go along with active development. Eventually InfiniBar will be stable, fast and complete enough to be used in general, but until then, if you want something that is guaranteed to work, you may want to look elsewhere and keep InfiniBar in mind for later.
Thanks! I'll play some more tonight with my setup. I use a similar setup as Bam(Bartender3/InfiniBar) so I don't mind if it's not complete and stuff breaks :)