Like, if I want switch from 1 handed to a bow, can I do that? The equip menu lets me equip arrows, but I can't figure out how to swap to a bow with 1 button .

Whenever I equip a bow, it cancels out whatever else I had already equipped. Is the a secondary equip slot available somehow?

(on a PC using a 360 controller BTW)

No, you can only have 1 weapon equipped at at time if it uses both hands and there are no other slots. The bow uses both hands.

Didn't Oblivion let you hot-swap between melee weapons and bows? Why did they remove that?

It's annoying manually switching between weapons in the menus during a battle.

Use the d pad to choose your favourites

Certainly a PC-tastic development.

http://www.gamesas.com/index.php?/topic/1258181-useful-gameplay-advice-for-all-our-newly-arrived-dovakiihns/page__p__19176029__fromsearch__1#entry19176029

Try this