We have quite a combination going on in this house. The first floor has a dual fuel furnace/heat pump/AC unit. If it's above 40 degrees it's running as a heat pump, lower than that it uses gas. The upstairs unit is a conventional gas furnace/electric A/c unit, while the basement has a heat pump. The water heater is tankless gas, the dryer is gas, the cooktop is gas but the oven is electric. And last but not least, the grill outside is natural gas. I had that put in about 20 years ago and I think it was around $800 to do, but it's wonderful. We probably use the grill 100 times or more per year, and we never have to change a tank or worry about running out in the middle of doing a pulled pork.
And to confuse things further, I drive a plug in car.