I wouldn't give up so quickly. Has exercises been done to address the issue at all? Without exercise and stability exercises Of course the wrist would remain weak! Any end range discomfort can be alleviated with an appropriate tensor bandage or tape job as opposed to a full all out splint. As PTs we have to Problem Solve with trial and error. I would not even be considering a specialist until the PT has tried all the appropriate non invasive techniques available at their disposal. Yes, the aggravating factor (work) will be a significant problem. But this can be modified via technique, and appropriate trial and error with soft splints and strengthening before giving up!