My Pdoc is my T, I don't have another T because I think I'd just find it totally confusing to be seeing two different therapists with potentially different approaches/schools of thought/etc. Plus I have major trust issues due to past abuse in therapy so it was hard enough for me to learn to trust my Pdoc without having to trust someone else on top of seeing him also. That's just me though, and I do think it would depend on what sort of therapy the Pdoc you're looking at offers - is it actual pyschotherapy type stuff or more like med management with bonus friendly conversation to see how you're doing?