Master of arms

[Pit Lord]

If a rage gladiator has Master of arms can he wear shield ;) ?

[Stormcloak]

I haven't tried, but shields have the war or theatrics specialty requirement. I'm not sure that MoA over-rides that as it says "all available weapon skills" .

[Prinny]

Haha I never tested it but this made me try it on one of my def wars with MOA and sadly he can't wield Exotics so I don't think rages can wield shields :P

[Kreegan]

The skill description is pretty clear - it works only for the weapons available to the respective class, i.e. the listed in the first row of the given tree.