I cut mine several months back after realizing that my mid-back length hair was ALWAYS in a ponytail. I miss being able to braid it now. So I'd suggest a braid instead of just a regular old ponytail. Also, something like a headband or those stretchy things that go all the way around your head (like giant rubber bands) might work while you are working. They'll keep your hair out of your face, and it's something different besides a ponytail. I also wear hats a lot. I think it looks cute to pull your long ponytail through the hole in the back.
Thanks Alli for my siggie pic!