In theory, the stylus uses palm rejection technology, allowing you to put your hand on the screen while drawing. In actuality, this works pretty well, except along the edges. I repeatedly ran into a bug in Sketchbook Pro where I'd put my hand down on the edge of the screen first, then the pen, and the app would render a nice long line between my drawing and that edge.
Writing with the DuoSense
Writing and PDF annotation is one place where the DuoSense shines, although that nib is still too slippery for clean, accurate printing. The palm rejection tech worked flawlessly in both MyScript Notes Mobile and ezPDF Viewer on the HTC Evo, allowing me to write down quick notes and annotations without any strange lines appearing on the screen.
Like with most styluses, cursive writing seems to be the winner when it comes to clean notetaking. Print letters tend to get over-curved when writing quickly.
For the Windows 8 devices paired with a DuoSense—a Sony Vaio Duo 11, for example, or Asus Taichi—or one of the HTC tablets the DuoSense supports, the stylus will likely be a decent addition. It's not anything groundbreaking in the stylus field, but if you plan to sketch or take notes, it's a nice tool to have.
Sign up for CIO Asia eNewsletters.