It's still not realistic. The Yumi is larger than the War Bow, yet which takes two slots? If slots were put in to be realistic, then I don't think every other thing in this mod would be unrealistic.
Also, first person and third person aiming is different. You can't just tell someone to go in first person, because you have to aim totally different.
Let's not go for realism because yumi bow is an extra option for archers that like
to suck a challenge. Having your polearm visible on your back eliminates archers hiding big weapons in their asses and then pulling them out to the surprise and misfortune of pursuing infantry. Because it's fair.
I know their aiming is different, I'm saying "get used to it" because there should be a drawback to constantly being able to see over your own shoulder and wearing huge weapons on your back simultaneously.