Actually, massage therapist usually work in conjunction with a chiropractor, and physical therapy depending on what the patient is being treated for.
Would experience as a massage therapist look good for a career in nursing, chiropractic medicine, or forensics?
Not nearly as good as a college degree in those fields would. In fact, you have virtually no hope of working in those professions without one. I think you need to understand the difference between a JOB and a CAREER.