Klose is one of the better magical users in the game due to her higher ATS and EP. The fact that her Orbment's use of only 1 line allows higher level arts. Otherwise, her attack strength is extremely low making her a sub-par physical attacker. Her rapiers have no range bonus either. Kaempfer is very useful as an offensive tool to lower the target's defense in order to inflict higher damage as well as an effective defensive tool to lower the target's capability for high damage.