Feldon 
Some of the big features of this week’s Game Update 65.5 were a number of class tweaks in PvP combat, the expansion of PvP’s Blue Adornments to other items (cloaks, charms, etc.), and the addition of PvP Set Bonuses on certain items. While the first two have been well-received, it seems that the new PvP Set Bonuses were bugged on Test and Beta and are now bugged on Live such that they are not effective at all. But perhaps the bigger issue is, some of the PvP Set Bonuses grant stats which even the most poorly-geared player has already capped out on.
As far as PvP Set Bonuses not working at all, Omougi has acknowledged the issue and promises a fix soonish:
These setbonuses should work with duplicates of the same item. These have been working for a while on internal servers but unfortunately they were missed in our data push to test/live. This fix will be pushed out to you guys as soon as possible.
UPDATE from Omougi:
We’re aiming to have the set bonuses fixed and functional in next Tuesday’s hotfix (March 5th 2013). If plans change I’ll keep you updated!
However the issue of whether the PvP Set Bonuses are desirable continues to be discussed on the EQ2 Forums.
EQ2Wire Asks
Have you found any of the new PvP Set Bonuses to be useful or desirable for your PvP characters?