Template:Switching primary archetype
A player's primary archetype cannot be changed.[1][2]
When it comes to the primary archetype, that is a decision you'll want to make and you'll want to make sure it's the right decision, because it's permanent... You are going to create this identity that you can't just change on the fly. This is going to be something that you will know a person and you will know what their base archetype is and they're not just going to change from battle to battle. So that gives some consistency in the engagements and understanding reputation on the server.[1] – Steven Sharif
When players choose their primary class, it’s not just dictating how the next several hundred hours of gameplay will go... It’s only the primary class that cannot be changed. And hey, that’s what alts are for![2]