I found it comfortable enough on my iPad Pro 11” in my lap. I wouldn’t say that it’s great that way. It’s absolutely the best feeling keyboard I’ve ever used. The trackpad is great for the size, but it’s nowhere near as good as a MacBook.
Unfortunately, I didn’t keep it because it just felt like overkill. Already having a MacBook Air, it’s redundant. If I didn’t have a laptop, I’d probably have kept it.
I have a feeling that once I no longer am in graduate school and need full desktop OS, I may end up going to just an iPad Pro and Magic Keyboard. Hopefully by then Apple will have matched MacBook battery life on the iPad.