Ali Baba’s Wee Booties are useful if you want to me the greatest Leeroy Jenkins of the server. Most of the times is useless becouse without your grenade launcher, the only thing keeping you alive is a melee weapon..It's suicide UNLESS you are in Degroot keep.
Chargin' Targe will keep your ass safe when facing soldiers, the resistance damage is bigger than the Slendid Screen but you can't directly send your self into the middle of battle, you have to wait until your opponent is weak/distracted and then charge.
However, the Slendid Screen short charge damage is awesome for every demoknight, just mouse 2, hit something and instantly mouse 1. You can almost take every class in a single charge, specially scouts.
I prefer going with the Chargin' Targe. Sure, the charge damage isn't that big but at last It keeps you alive. Today I collected 18 heads while using it.