Essentially it handled it like a pro (pun sort of intended). I experienced virtually no lag as the layers increased and the detail went in, I could pinch and zoom around fluidly and scribble as fast as I would using a pen on paper.
It really is quite incredible considering how much information is there. With live vector shapes created for every mark made with the pencil. My fairly beastly workstation was struggling a little with the file once I transferred it to Illustrator so whatever wizardry is going on with the combo of Adobe's code and the iPad Pro's hardware it seems to be working damn well.
The app does have its limitations, it has quite a small toolset and none of the usual vector editing features found in a full desktop app but if you use it for what is says it does on the tin (drawing). You're aware of it's limitations and you partner it up with it's big brother Illustrator for any bezier tweaking or final refining then you've got yourself a very handy tool in a very portable package.
Which really is the big appeal for me when it comes to the iPad Pro in general. I think it sits perfectly on the scale in terms of screen real estate and portability. The fact that I can take this thing with me when I'm traveling or commuting and smash out a complete digital piece whenever the inspiration hits me is a game changer.
Apps like Adobe Illustrator Draw or Procreate (there are a couple of others I'll get to in another post) are damn good and can absolutely produce professional, useable results.
I dig it.