A little while back I gave a new tool a try. A Wacom Inkling. I use and have used versions of the Intuous tablets, Cintiq and a bamboo stylus for sketching on the iPad. The Inkling intrigued me because Wacom stated it "bridged the gap between traditional and digital sketching". Basically the Inking is an ink pen that syncs with a flash drive-like device that captures and stores your drawings done on paper. Any paper. And with regular 'ol ink. There is a demo video here: http://www.wacom.com/en/us/creative/inkling
I flip-flop between sketching digitally and analog. I would say 80% of the time I sketch on paper. It's just easy. No software, batteries, incompatibilities, file formats, corruptions, etc. Since sketching is usually the beginning of a project, it is nice not to think of any of that stuff and just draw. I carry a plastic case with the drawing stuff in it, a pad of newsprint and occasionally some color pencils with me just about everywhere. Usually, I sketch with a regular ball point pen. One day I started drawing with one (because it what was available) and I liked it. Particularly I like drawing with one on construction paper or newsprint. These papers take the ink really well.
My thought was Inkling could help me with the scanning part of the process when I was away from the studio and didn't have access to my scanner. Often I would use the camera on my iPhone to snap a photo of the sketch and bring it into the computer via Dropbox. The quality of the photo varied with shadows getting in there sometimes. Also, if the camera and the sketch weren't completely parallel when the photo was snapped the art would be a little skewed. So the Wacom Inkling would fit nicely into that little need.
In theory the Inkling is a great little tool, in practice it lacks the refinement I would like to build my art from. The capture from the Inkling is very, very rough compared to the actual sketch. I have tinkered with every setting to try to improve the capture quality. One issue is the registration when drawing one line over another. It does not capture it very well. The Inkling pen is nice, even if you don't use the capture feature. I like drawing with it, although it defeats the purpose.
When I sketch digitally, I use Sketchbook Pro. In my opinion it is the best digital sketching app available. I have used it for a number of years, and I love it. It is really simple to use, and almost all of the tools and commands are easily accessible while using the stylus.
I try to draw whenever I have the opportunity no matter if it is analog or digital. What do you like to draw with?