No...never used dpn's to knit a project....except for the very top of a hat...but then I learned how to knit small diameter using the "2-circulars" method...and dpn's have been history ever since!
However, I recently watched Eunny Jang using dpn's for the gusset and heel of a sock, and she used Signature dpn's...and it looked much easier!
But I've never knit a single sock either. Not even cast on for a sock! The closest I got to sock Knitting is buying some sock yarn and buying a few sock how-to books.
What confuses me are all the sock Knitting methods! Toe up; toe up 2-at-a-time; cuff down; magic loop;2-circ's; dpn's. Everyone has something positive and/or negative to say about all the choices. So here I sit: sockless!