Talk to H8PVMNT in our group, he tows his XJ with his club cab dakota. He's on 38s with dana 44s, so its not a small XJ, either..
Some of my debate is whether I sell my XJ.
I have driven 3/4 tons as daily drivers, and its a bit old getting 11 mpg and riding like a brick.
Comparitively, every drive I drive someones 1/2 ton it feels very cushy and I think people are getting more like 15 mpg with them.
My daily driver XJ gets about 15 mpg, so, if I can get that with a truck....