Experimenting with Astropad on a promo piece of art - an App that lets me run my Mac on my iPad (the circle controls pop-out menu). Captured the screen from my Cintiq, but painting with a Wacom Stylus and FULL Photoshop on my iPad. Lag time is a bit distracting, but I haven't tried connecting via USB yet - this is with a bluetooth/wifi connection. Hmmm. Disadvantage: still need Mac keyboard.