I really like Field Notes from Paris and will probably buy it in the future. I think it's definitely unisex, and Ineke agrees on her FAQ page.
One suggestion that I would make is to purchase the Deluxe Sample Collection from her website. It costs $25 dollars and comes with a $25 dollar coupon to use on a full-bottle purchase. Or, if you're pretty sure you're ready to buy Field Notes unsniffed, I'd go ahead and buy the samples first anyway and then redeem the coupon for the bottle. You'll get her beautifully presented box of samples essentially for free that way.