I don't mainly because Dr Layman believes the slower protein digestion with casein is a negative, not a positive.
Minute 42: https://youtu.be/-8Logf5zdEU?si=g2N3KtGuG0FXX3h3
I only use 1 scoop of whey a day in early/mid-afternoon, so it fits my schedule and food plan better. Casein is better if taken at night to take advantage of that slow digestion…let us know how it works for you.