As an illustrator, the workflow on the iPad Pro using a tool like Procreate is amazingly simple, quick and portable.
Compared to something like my old com tablet, I am much more likely to grab the iPad and pencil and draw, then go to my studio where my computer is setup and draw.
Even the difference between wacom/graphics tablet and iPad with the pencil is almost night and day, no lag or parallax on the iPads is a huge draw card.
For an illustrator, the iPad is a perfect (digital) tool.