I finally decided to go for it last night and spent all 41 Heroic Badges on a trinket. Tell you guys what? I am somewhat disappointed. Without the trinket activated, I was doing around 500 Shield Slam damage, with the trinket turned on its around 700. When it crits, it does around 1500. Not bad, but personally I don't think it is something to be excited about.
One thing I will need to see is how much this thing is helping with the damage reduction. Since this is increasing block value it would be interesting how much damage it is reducing. Here is the formula: X = [(Shield block value * 1.3) + ((Strength / 20) - 1)]. Where in X will be the amount of damage reduced and block. (1.3 will be the increase because of a warrior's Shield Specialization talent.). I will do some further comparision and get some kind of mod (scrolling combat text) to see the block values.