The fabled "Knight" AC patch - rangers and bards too?

[pogs4ever]

Heard mixed things about this. AC defense table patch does it affect hybrids or just paladins and sk's? I've been told bards get the adjustment too but many refer to it as the knight ac patch.

I do tank mobs on my bard at 60 in a pinch and it would be cool if I could do it more often!