JiffyPopTart
Bree-Yark
I'd further argue if the shield is strapped to my arm and difficult to drop them that would leave my hand free to do various weapon/item swapping shenanigans.My quick fix for that is to say center-gripped shields can be equipped as an object interaction but can be disarmed just like weapons, whereas shields secured by enarms can’t be disarmed but take an action to don or doff like armor.
Then, as the GM, I'd overrule myself and say the only way you can swap weapons "freely" is by throwing or dropping one, not stowing and unstowing as if you are juggling three hands worth of items.
Also how does the warhorse see in the magical darkness?