I also have the Holcomb PRS signature with the alpha/omega's in it... I really like them. It was probably the first expensive ass guitar I bought without playing it for a long ass time first. As soon as I plugged it in and started playing my usual riffs I was sold.
I have the nazgul sentient in my km7II, and had the blackened winters in my km6...the nazgul is okay, I do like the sentient. The blackened winters are sick. Love those pickups. The neck one is a little getting used to. But it cuts like a knife without sounding harsh.