I was using this for a bit on my DK in pvp mixed with a warlock set and found it to be pretty decent especially with the amount of bow users running around, it really depends on your play style though.
In my opinion, as someone who mainly PvPs, it's not worth it. Having to block to get the dodge chance is inferior to getting a general dodge chance by casting from the Spectre set.
I was hoping to try an evasion tank with sparks, cinder, and hist, has anyone had luck with that?
I tried dodge tanking DsA with Hist bark and elude, and dodge chance did not seem to stack. I should have had about a 1/3 dodge chance and ended up dodging more like 1/10.