The MTH is identical in drivetrain to the FEH and MMH. The only differences in the models are aesthetic and base options. As for the options, I believe all three have the same options available.

As for the AC, there is an Econ button that, when enabled, allows the ICE to turn off and allow EV only travel. If the ECON mode is not enabled the ICE will continue to run and the AC will function as with any non-hybrid (cold air all the time with reduced FE). If the ECON mode is enabled, the fan will continue to circulate air but the active cooling from the AC system is not active (warmer air during EV).

The Econ mode is a compromise that allows the EV mode but still provides cool air between stops.