Yes! Heated seats are awesome!! I also have electric heated seats front and rear. And 2 heat muffs plumbed in series. Now I have LOTS of heat!!
But before that I had only one heat muff dumping air thru the firewall at my toes. One spring trip I took off from a warm Idaho Falls on a 4 hour flight over the Sierra into the setting sun. At altitude, I lost the warm air and the solar heating, and it became REALLY COLD. Combined with the thin air at high altitude it was just miserable. I think if I would have had a rear passenger on that flight they would have become a human popsicle.
I do carry warm clothes in the plane for emergencies, but I don't want to wear them all or be fussing with adding/removing layers in flight. The heating flexibility is nice to have!