Yeah, cast iron can be too heavy to lift comfortably.
Yes, but...one of my best pans, my fave omelet pan, is an old cast iron Wagner 9" Chef's Skillet, lighter than its forerunner, Wagner Griswold 9" Chef's Skillet. Perfect size and shape for omelets, and light enough to flip fried eggs with a snap of the wrist. They made one like it in 10", but those are hard to find and pricey if the seller knows what he has.