NxOgre and non-nvidea cards.

Hi,
I'm currently trying to choose from all the physics "engines" which one I'll use and I was always partial to PhysiX but my question is. Does NxOgre work on any graphics card that isn't NVidea? My guess is no according to what it says on the NVidea website but since so many games use PhysiX I'm confused on why would anyone select to use a API that would limit their list if possible "customers" to at least half.
Thx

You can use NxOgre/PhysX on any type of graphics card.

You can use hardware enabled PhysX (Whole or partial scenes) only on a nVidia GPU.

Ok thx. My choice is made then

Will we be able to make multi platform games using NxOgre? Is NxOgre compatible with Linux and Mac?
[edit]
Found my answer elsewhere! Its a yes for linux and no for the mac. which sucks :s
Sorry for posting a question without previously looking for the answer.