This is awesome! I've been eyeing the ability to use an iPad for a dev device for a while now. As a frontend and react native dev I'm unfortunately still restricted by my need for a good web debugging experience (eg chrome dev tools + react/redux dev tools) and the ability to compile to an iOS device. I can't imagine either of these are coming anytime soon, so for now I'll stick to an old fashioned MacBook Pro.
That said, sometimes I wonder if Apple will ever make the plunge and make an iOS version of Xcode. The thought of a mobile version seems scary, and obviously this would only be practical on the iPad, but at the same time if they ever try to make the iPad replace the professional workhorse that the Mac currently is that'd be a natural direction to go in.