The only car I’ve ever owned with a heated windscreen was a Ford Focus. It worked a treat and was still really useful even after some of the conductors corroded and stopped working.
Oh man, our Ford Mondeo (UK must be 15 years ago) had the fine heating wires in the front windscreen - best defrost/demist ever, almost instantaneous compared to every other vehicle I've driven. Definitely a feature that would sway me from choosing one vehicle over another!