I've used it once or twice and have initial impressions
Very plush feel on the inside. Gripper on the inside as well as out will not it slip at all. Gripper on the bottom as well as an elastic strap keeps it secure at the calf muscle. Really liking the Hincapie quality.
Great quality jersey, excellent wind block and high neck fit. This is one of the best quality Castelli's I presently own. Jersey's run a little on the small size so size up one size. Dealing with Backcountry was a pleasure... very happy