Is it PFS legal: elf magus kensai spell dancer?

[chad hale 637]

Is it PFS legal: elf magus kensai spell dancer?
I am not sure if there is some archetype overlap or not.
Especially when the Spell Dancer trades out the gained medium armor proficiency, while the Kensai has no armor...

what are your thoughts

[Imbicatus]

They both alter armor proficiency, so they are incompatible.

[calagnar]

They over lap. The character dose not have medium armor proficiency to trade out for the spell dancer ability. The character must have the ability to trade out in order to get the ability.