Nice tank piece, just depends if you'd rather have the +10 shield skill from your AF boots or the -2% damage and +2 enmity. Decent enough WS piece if you don't have the Rutters or Marine boots.
In a nutshell. Good until something else can be obtained. Great for PLD hate control but swap out AF when not using voke. I full time these on samurai until i get something better.
Good for /nin tanking on PLD with HNMs etc. The damage -2% will proc on TP moves, meanwhile your shield wont. If you find your shadows down just macro AF feet in while you wait for recast if need be.