I've been growing my hair out since chemo, and love it. BUT, you look so awesome with your haircut, that I'm considering cutting mine short again. Before cancer, I'd grow it out, cut it and donate it, and then grow it out again. Now that I've lived through cancer, I thought, "damn it, I deserve to keep it!!!" But I think I'm over that now. The thing about long hair, for me, is that the hair itself looks awesome. But sometimes a shorter cut is more flattering.
On the other hand, I would have thought the company could have been happy with your hair in a ponytail.
On the other, other hand, I do think you're more attractive with short hair, and will be even more so with a clean shaven face.
Just one woman's opinion ...