Hi Eric. The Sinner cleans up fine. That is, it sounds good clean and well as dirty. And a slight breakup sounds great. It's quite a versatile pickup, actually. However, when it's clean it doesn't have that sweet single coil sound like, say, an Apache. It has a stronger, fatter sound--a little bit like a P90.
I'm gonna see if I can get around to posting a clip soon for you and others to hear how the Sinner works doing some bluesy stuff. I'll have to blow the cobwebs off my playing though.