OTOH,

I cannot seem to get any comprehensive information on psionic armor, what does it reduce primarily, spells perhaps eh ;p Anyone has a clue?

@ SiewKaiz

Thanks!

When I run through Protoss Dark and High Templar = Light, Biological, Psionic armor type. So what does this mean? They're light and psionic, so how does it work then?

http://wiki.teamliquid.net/starcraft2/Psionic, my only resource at the moment, alas doesn't give ultimate definition on psionic armor.