My Keychron Q1 works great with both the iPad Pro and the Mac Studio. My logitech MX Ergo Wireless Trackball does not. It works with each, but the switch over is a time consuming PIA. I have a spare Ergo Trackball but it is a rather large device and 2 of them on the desk would take up more room than I would like. I am going to unbox it and pair it with the iPad and see how it works out at my desk with the other one. I thought about getting a Magic Keyboard with it's trackpad but once you use a Keychron with your own switches installed it is very difficult to change. Same for a trackball. I cannot see using a mouse, what is a good wireless trackpad?