I came down here 14 years ago from Virginia. I knew heat pumps and I knew 90+ gas heaters. I've yet to see a 90+ gas heater and rarely even see a heat pump here. However, I don't know much about multi-speed compressor a/c units and I had never seen one in a residential area in Virginia like they have them here.
I think the reason for both are the upfront costs, plus like I said their techs can’t fix HPs.