I don’t know for a fact this was overlooked when it came out a decade ago but I remember that Bantam Spectra didn’t seem to be doing a stellar job of promoting their authors at the time and Williams move to Night Shade is at least suggestive.
What I actually set out to read what Williams’ Banner of Souls but whatever place I thought was an intuitively obvious place to file it wasn’t the W section of my paperback/trade/ARC F&SF library. I hope to stumble over Banner of Souls at some point but until then have a review of an entirely different book. As it turns out I have apparently been confusing by copy of this with my copy of Banner for over a decade and had never actually read it so this really worked out in my favour. Although I still want to reread Banner of Souls.