I own the 7202, as well as the DX7. They both support what you are wanting to do. You will not find an "elevator mix" in the programming that is built in, but you can mix the elevator channel with any of the three remaining channels, mix them with opposite percentages, and then put them as "on" and not on a switch. This will give you exactly what you want. Works like a charm, as I have several planes set up like this.
I even have a P-51 where the elevator halves are mixed together, and then (on a mixing switch) I mixed them to the ailerons, so the elevator halves function with the ailerons (reverse of each other--like an elevon). This gives out of sight roll maneuvers!