I live in the dry climate of Southern Colorado and almost immediately first ride I realized this was the wrong glove for this area. There is almost zero breathability your hands will get wet and stay that way this is made to keep your hands warm when wet like a wet suit it's the same material.
They kept my hands warm, but it's such a drag to have wet hands for no good reason. I could not wait to get these off and have never worn them again.
I bet they work great in the rain doing their job exactly as intended. Maybe it's a versatile glove for San Francisco Bay area climate, but I lean on this being a specialty glove only useful if it might actively rain during your ride.
This glove gets me through most of the Bay Area winter. It's light and windproof, so as long as you do some intensity, it'll keep you warm. I start overheating once it gets above 55F and I only switch to thicker gloves when it rains or gets in the low 30s. For me, the range is 40-60F on training rides and 30-50F on races/high intensity. Durability is ok but not best. It lasts me two seasons. It's also on the pricey end of things but it is a great versatile glove. True to Castelli sizing.