Hmmmmmmmmm.....are you asking whether DGs will take it as presumptuous that you are wearing an anchor necklace? I don't really think so, I would think they would take it as
interest!!! I am reminded of a PNM who wore a pink and blue outfit (our colours) to a Invitational party....yup, she was showing us that she wanted us and
she is a DG today.
As for other sororities...well, women will be touched the story behind it but other women (who you may not have time to explain the story to) might take it as though you have already decided that you really want DG and are not open-minded to other groups. If you feel in your heart that another Panhellenic group is more for you, wearing the anchor might hurt your chances with them. Best to err on the side of caution.
I would probably say "wear it to DG and take it off for the other parties". I just want you to find the right home, whether it is Delta Gamma or one of her Panhellenic sister orgs!!