Jay, i mustve misscrolled when i quoted you, i was trying to reply to the OP. I;ve used to beta test SwiftKey and really loved it, but weirdly i dont feel comfortable at it on the Note 3.
@OP, even though i use the pen lightly, with the Google Keyboard, before you activate it (text input), hovering above the text box with the pen opens the small button pen input. No idea if that is Google or Samsung (TW), dont know if the Pen Input is recognizable as a keyboard. Soft Keyboard wise, the Google one feels very good.