I was reading the linke posts and also noted that the Harris trees are likely Swingle, not FD as I was thinking (not sure why). According to UCR "'Swingle' is moderatlely salt tolerant but is not adapted to heavy clay soils or calcareous soils", which is exactly the type of soil I've planted into. Oh well, I am going to ride it out and see how things go.
I recently ordered two 1yr Xie Shan's from Harris, to replace mine that just croaked. I planted one in the greenhouse soil, and one in a rootmaker-roll container. Along with the variegated minneolas, I will see how the in-ground trees do compared to the containerized ones.