quad slotted. they fused a MG into it.
I'm considering buying one to replace RWH/Nyd garb for a couple of chars, I don't have anything that needs more SP than what RWH+Nyd does, and EDA restores approx. the same as those two combined.
A +10 EDA will heal around 39% more SP than the RWH+Nyd combo. It will heal 55% less HP, though.