What would be the point of attaining a clinical doctorate?
Do you want to practice?
You only need an Masters Degree. Degree creep for practitioners is generally not seen as necessary or positive in most clinical professions, historically (PT, Psych, Aud), save from the perspective of keeping practitioner supply low and salaries higher (which didn't work out so well for audiologists - for whom the economics of the degree are no longer sensible).
Do you want to teach/research?
You should get a research doctorate. Many, many schools even have a healthy number of MS CCCSLPs on staff as instructors.