Joke picture, just wanted to share if people dont go on BG.
The addon armor looks decent, but you need to decide on what of three scenarios that would be most beneficial to get this for BST.
One is for a DD build for personal dps increase with 3% crit and 2% DA. 2% DA > 3% DW as both are damage over time increases but the DA will give you extra TP gain and extra WS damage.
Another is for a DD build focusing on pet damage which will have 2% pet DA and crit and 10 pet acc. I have a feeling this will not be as good as the first option simply because gear gets better once your able to stack more and more % based stats, I dont feel pets getting 5% acc and 2% crit/DA is just not worth gimping your character out of a body piece. BST AF2 should have been a hybrid of these 2 focuses, but instead we got moar useless charm+ gear.
Last option is to just use this as pet burn only gear, keep a NQ/HQ hauby for DDing.