Yes, high breathability is a smart choice if you run warm or ski in milder conditions. These protectors use mesh panels, moisture-wicking fabrics, and ventilation channels to let heat and sweat escape, which makes a real difference when you're wearing them under insulated ski pants on a sunny spring day.
The trade-off is that high-breathability models may sacrifice some durability compared to denser options, since the mesh and lighter fabrics aren't as tough. But for most resort and spring skiers, that's a worthwhile exchange for staying dry and comfortable all day.
High breathability is also great if you're doing high-exertion skiing—like hiking to sidecountry terrain or skiing aggressively—where you'll generate more body heat. Just keep in mind that on genuinely cold days, you might feel a chill, so consider your typical conditions before committing.