There are still skills to be learned and enhanced, but the player could potentially become skilled at wielding a swordandshield before deciding they want to learn to use magic spells.
To allow the Lago Agrio plaintiffs to waive privilege expansively for favorable documents and information as part of a public relations campaign and then shield related documents behind the screen of privilege would be to allow the use of privilege and the work product doctrine as both swordandshield, an abuse that courts have discouraged.