I brought it home and moved it to a much larger pot, placed it next to the south side of the house, and placed a string of C7 Christmas lights around it for cold protection.
A few members of the TXRareFruitGrowers Club have been able to grow them successfully, and they appear to be relatively cold-hardy for a tropical plant, especially once established. Ed Self's survived 17 degrees in Katy, Texas this past winter, so I have hope.
According to the CRFG Fruit Facts, solitary trees are not as productive as trees planted in groups, so I may go back and get another one for cross-pollination sometime in the future. They are reported to be very slow growing, so it will probably be a few years until I get to try the fruit.