I don't see a lot of uses where pulling out a stylus is more useful than using your thumb. It's just an added step that will make it longer to do basic stuff like a phone call, texting, checking your emails, fast online fact-checking, etc. while requiring both your hands to be free.
The only use it has is for drawing apps/games like Draw Something or Photoshop touch. A capacitive stylus is precise enough for a very simple game like Draw Something, and if you were to do any serious Photoshopping, you'd be using the desktop version. Even a desktop version from over a decade ago (Photoshop 7.0) is more capable than any mobile version of Photoshop. You just can't do anything useful on Photoshop touch other than basic sketching. If you were also serious about pen input, you'd use a large surface that offers a way better level of precision than the Note's screen, something like a Wacom Intuos/Cintiq.
If you want something portable, you'd be way better with a Surface Pro running the desktop version of Photoshop. Photoshop touch on a Note is just worthless for now.