I’m an illustrator, have an iPad Pro and a high-end Wacom. Work with a lot of people in the animation industry. No one is regularly using iPads for anything besides sketching/toying with ideas.

If Apple made a big push to improve their hardware, get full blown Photoshop with Adobe’s brush engine, this could conceivably change. Everything’s too piecemeal right now though. File management is still terrible, Photoshop brushes are only available in Adobe’s terrible apps, lots of Bluetooth buginess from app to app, inconsistent UI patterns etc. The newest Procreate update and Affinity designer are pretty cool, but it’s still not there yet.

Indeed, I switched from Wacom Cintiq to iPad Pro when it came out. So far it's the best drawing experience I've ever had on a digital device.

I also had one of the Surface Pros with ntrig digitizer. It was near impossible to draw properly. Quick sketching is fine, but slow and precise lines were impossible. Cursor just jumped around and was unusable.