It's certainly the hope of anyone that takes the job at least semi-seriously to reduce the JA lock the job suffers from. Considering there's nothing really special about the animation too, I don't think it'd be out of the realm of possibility. I don't think the effects are strong enough to call the JA lock a balancing mechanic for them, you're not doing direct damage, you're simply applying a small-ish debuff that continually scales very slowly after the first application.