I really like those, y'all! I love the solid sides and rank cattle are going to have a hard time thinking about anything other than moving forward. The corrugation lines really guide the cattle's sight.
May I make a few suggestions for safety. I'm not sure how you push the sweep closed with cattle in it, but I suggest adding a spring that keeps the latch closed. An operator holds it open while moving it. Reason - if a cow or bull kicks it, the catch will stop the gate from hitting and going past a down operator. Even if an operator is not on the ground a spring catch will keep the gate from swinging back.
Second suggestion along the same lines - add a foothold for the same reason. I train my folks to keep a foot on the bottom bar so when cattle kick it, they have a very quick way to rise up off the ground to keep the gate from hitting them.
My crowd sweep is from Priefert, made of powder coated pipe, and I added a spring to the catch. While my stock is fairly gentle and docile, in a crowd pen they get irritable. These 2 safety features have kept me from getting seriously hurt.