I know you asked for this question to be answered by Family Echo themselves, and normally I would respect that, but in this particular case I feel able to step in, as I believe it may have been my question, one requesting an option to set gender to 'other', which prompted Family Echo to add this feature.
I felt that the option would be useful if I didn't know someone's gender, for example when researching very old families and gender isn't listed. I also like using blank boxes as places to write short notes on the tree.
The reason that I believe it was my question that promted this update is that I have never seen another question to the same effect on this forum. My original question is under the title: 'Changing gender to neutral'.
I hope this answers your question satisfactorily. If you would like me to remove this answer, just comment and I will hide it.