Its not a personality test used by clinicians because it is a test of personality preferences with no clinical value. The most common clinical tests of personally functioning are the MMPI-2 and the MCMI-3.
One would think that preferences would dictate actions. As an INTJ, I'm inclined to seek certain lines of work. Anyone who hired me to deal with the public would be very sorry very soon, and so would I. But give me a research project, and I'm happy as a clam. Clam being the operative word.