A grown up version of the Poker II, and so much more.
When I was using a Mac full time, I almost always used a CODE keyboard for all my typing. That lead me to find something better to use with my iPad, and I snagged a Poker II with MX Clear switches. It was a good keyboard for occasional iPad use, but it had a few fatal flaws: it was ugly, and the CMD key was unchangeably in the wrong location.
I had given up on a mechanical keyboard for the iPad when I switched to it full time — I just hated the way all of them looked. However, over the last few weeks I have come back to wanting a better typing experience. I hooked up the CODE and remembered why I loved it so much, but the same problem with the CODE + iPad Pro remains: scale. The keyboard is just too large compared to the iPad Pro.