As someone who played Femroe for years ... yes, they are very masculine. I've told my friend who praised my glams often that it is a struggle. It's basically a mini-game inside the game to find stuff that looks good when 60-75% of all tops make you look like a dude or makes you look like a dude wearing female clothes.
I started religiously wearing 2B bottoms for the curves to balance it out and preached on FB groups about how they're a god-send for Femroe. Hell, there's certain armor sets where Femroe cut a better male shape than any of the males in this game (Eureka fending set for example, Femroe look like straight up male action figures)
After Hrothgar came out, and I played 1 for 5.0 story, I tried every female other than middie and lala and yeah ... Highlanders are a great example of what I think Hrothgar Females could look like. They look athletic but also unmistakably feminine, they are my favorite body type in the game. Given the art I think they will fall somewhere between Highlander and Viera.