http://gw.gamewikis.org/wiki/Sliver_Armor
Ok, as far as I can tell, how the hell can THIS junky ass skill be better than Gladiator's Defense? Aside from it not being elite.
As a warrior, you can only get 12 earth magic [and at that point, you have no healing / support skills]
@ 12 magic, it lasts 10s. [glad's def is 11 @ 16 tactics], it has a 45% chance to block [glad's is 75% always], it hits the same foe over and over again [nearest foe] for 29 dmg [glad's is 31 to every foe that hits you]
I think the only reason Sliver Armor is worth keeping is that it will always deal damage hit or miss and it affects spells too. But at 10e. your warrior must be crazy on the energy shyte...
Now if you were to combine it with Glad's Def, and Both Ripostes at 16 Tactics and 10 Earth Magic, hey, now we're talking, but I dont' see Sliver Armor worth much by itself. Heck, Bonetti's Defense is better in my opinion...