“Al Pi Halacha, Al Pi the shittos (held by virtually all Chasidic poskim and many others) that CS is Cholov Akum mamish.”
Interesting. Last summer, was in the checkout line at the shoprite of monticello and a chassidishe man had weight watchers ice cream bars in his cart. I thought perhaps he didnt clearly see the printed hechsher (maybe he thought it was soy) and pointed out that it was certified OU-D and since I assumed he only ate cholov yisroel, I was doing him a favor and pointing it out to him. He replied, he was aware, but, his wife was on a diet and he had a “heter from his rav in williamsburg” to purchase the non chalav yisroel ice cream for her. In truth, I didnt ask him to explain the heter, or to go into much detail. Either the guy was a liar, or his rav felt he wasnt much of a baal nefesh.