The shieldmechanics is abit wonky for this to be viable.
The arrowmagnet forcefield and damagereduction would have to go away first.
These are silly mechanics anyway, the shield should only cover the area they visually occupy.
Shield should withstand all low and medium dmg blows and all kinds of arrows without breaking.
High dmg crossbowbolts going thru all low end shields without breaking it,but hurting the player,possibly with reduced damage.
The shield should break if hit by a single blow over xx dmg. xx depending on type of shield.
Typically shields would then be broken by highend axes,sledgehammers and heavy throwingweapons.
If properly slowed down for the extra shield I would say yay.. turtles all the way.