I think having to let go of your block to chase ranged as a shielder is counter-intuitive. When there's 2 or more, it's almost impossible to get into run mode since you'll have to block projectiles, letting even slower ranged get out of reach. It was pretty bad when there were tons of throwers w/ some xbows everywhere just yesterday. My shield helped me survive, but I wasn't really able to kill much and just saw my team go down like flies.