This is one of the ways I have always envisioned using a device such as the iPad:
Bella Corporation on Monday showed an iPad companion app to its KillerKeys software at the 2012 NAB Show in Las Vegas. The KillerKeys iPad App provides quick acess to shortcut commands across creative tools (including Photoshop, Illustrator, InDesign, Media Composer, Maya, 3DS Max), plus a trackpad with gesture controls, application launcher, volume and zoom controls as well as a multimedia widget with a jog wheel.
Having used Microsoft Office, Photoshop, Illustrator, InDesign, AutoCAD, etc., one of the difficulties of these programs has to do with how many tools and controls are available within the software. With thousands of functions, presenting users with the right tools at the right time – without cluttering the user interface – is of utmost importance. Using your iPad as a tool selector and controller, frees up your primary screen(s) for the task at hand. This is a brilliant use of technology, in my opinion.