I am a recent LPC licensee.  During my residency period I worked under the additional tutelage of an LCSW while also being supervised by my assigned LPC supervisor. I feel I gained valuable knowledge by being able to discuss things with the LCSW provider. The two credentials share similarities, and one would wonder why the opportunity for valuable insight, additional perspectives, and shared growth would be actively stunted. The various mental health field credentials seem to be engaged in a tit for tat spat of trying to slight one another or hinder the progression of candidates in one credential over another. More supervisors offer more opportunities for learning and professional growth. I can't see a downside to this potential.