I’ve been using Universal Control since yesterday afternoon and I really love it. It’s seamless and I especially appreciate being able to isolate certain things to the iPad. This is particularly useful because I often pair program at work and it makes it so that I can talk to my wife or whomever without having to stop sharing or share that potentially private info. I wish the iPad could enable some sort of screensaver because I have some worries about it showing the same black text on white screen for most of the workday, but it’s not a deal breaker. If you have the means, I would highly recommend giving it a try. It feels even better because I’m using the Magic Trackpad so I can do all the gesture things on iPadOS.