Yes Chi will shorton up sheaths and dewlap better than any breed I have seen. My favorite kind of cows have ear to but Chi also adds some heat tolerance as well if you have enough in the mix. The trick I have found is to have some ear on the mommas and try to show almost no ear on the calves or as little as possible. I have a field full of experiments my self but somehow 50\50 Simmental x Chianina bulls, 100% Chianina bulls, 75/25 Chianina x Angus Bulls, 100% Angus Bulls, 100% Brangus Bulls, 100% Angus Bulls, and now 100% Hereford bulls has led to a more uniform calf crop than you would think.