I heard that Crysis 2 will have maximum options for 3D - stereoscopic, shutter-style and polarised(?). Does this mean I can use RealD glasses to get maximum vision?

I am not sure. Does the Zalman monitor support RealD glasses?
I thought they use their own circular polarized glasses.

I have the Zalman 3D monitor and yes, RealD glasses work just fine with it.