G'Day Mate. Alan, this topic and question is worthwhile, but I eventually have a 'non-answer.'
I personally agree with you that size and weight is more important; and this is not gender determined! A worker at my house that is a plumber 5'6" may prefer a gift pen that is smaller/slimmer than a consultant interior decorator that is 5' 9". AND, I did not indicate their gender - it does not matter. Their preference is simply what they feel comfortable with, I could care less.
Today at an Easter Lunch, we had a new visitor, and she got her choice of 5 pens as she was a new friend (I abuse anyone new to our house with several gift pens - my family/friends all have all they can stomach). She picked two very dark, thick, heavy Cigar pens. She said they felt comfortable in her hand with her arthritis.
So, as to your blanks above... Simple artistry! They all are superb. This six are wonderful and I really cannot assign a preference for gender, I believe each will have its fans. Anyone that has a thought to hand-crafted artistry will appreciate each.
Alan, your progress with segmenting is a breath of fresh air! I love your work.