I went to the Quimper Arts figure drawing session yesterday, and did a number of digital drawings/paintings there. I used a Wacom Bamboo pad connected to a laptop, a pressure sensitive brush tool for the line drawing, and added color with the basic brush tool. This was a ten-minute pose, which is maybe the minimum time needed for computer life drawing! In the 2.5 and 5 minute poses, I fumbled through most of the time setting up a file and selecting tools.
(That's a tattoo on her shoulder).