I don't really think that clarifying conditioners compare to clarifying shampoo's. Clarifing shampoo's are what you would use to get that super clean, somewhat stripped feeling.
Clarifying conditioners are basically light conditioners that contain acidic ingredients which help to cleanse the hair and remove build-up. They give my hair a clean feeling, but it's different than shampoo.
Are you interested in using them for your conditioner rinses or in place of regular shampoo?