My brain says I know vikings didn't have horned helmets, but my heart says they look cool, so I choose to ignore it when it comes to fantasy. Call them ceremonial or something
The fur on the jacket reads more 'aviator' to me, like a bomber jacket, especially with the helmet (take off the horns, it looks like one of those early pilot's helmets), which definitely fits the steampunk theme. I kinda like it, and I don't have a shoyru get so it's definitely going on the 'maybe' list
And that's a neat fact about the samurai helmets! Honestly that's probably one of the only good reasons to have horns on your helmet, they've got to be pretty inconvenient for actual fighting, not to mention a grabbing hazard, lol