Guild Wars 2

I’m wondering if the specialization will be permanent change to that specific character that you will always be that spec and you cannot change it at all or more like trait line that you can change off if you wanna go back to using normal build. If someone can clarify this it would be nice.

It is basically exactly like a trait-line.
Yo can change it at any time when you are not in combat.

The elite specs will be trait lines. When you pick that trait line, your class icon changes to that of the elite spec, you can equip the new weapon, and you get the new utility skills.
When you don’t have the elite spec trait line active, your class icon is normal, and you no longer have access to the new weapon or utility skills.