For the Paladins curious about this shield, this is the sum up:
Size 1 shield, so it gives you a base 22% damage blocked on a shield block.
Due to it's 31 DEF (32 on HQ) you get an additional 15,5% (16%) damage reduction on shield blocks.
So in reality you only get a 37~38% damage reduction upon a shield block. Yes, you do block up to 75% of the time with capped shield skill, however, keep in mind that you can cap out shield proc rate on a size 3 too, which natively starts out at a base of 50% damage reduction on a block.
So realistically, it's great for reducing damage if you're standing around, it's horrible as a shield for use in combat. Typical mage shield or for the stats for WS mods.