I have a calibrated set of Black Dog's in my Tokai Love Rock, and I do have to sing their praises, they sound excellent in a good LP. If you read the reviews at HC, you will have seen my contribution (the 3rd review).
I had a Seymour Duncan 59 & JB combo in my Love Rock, and it sounded good with them in, but I was unhappy with the lack of mid detail in the SD's, which is why I chose the Black Dog's over any other BKP for my main guitar.
Output for mine is 10k bridge, 8.2k neck. Not super hot, but they do sound wonderful through a cranked amp, or through a pedal. I spent some time restting my gear so that I could find the sweet spot for these pickups, but once you're there, oh boy, it's classic rock heaven! Forget scooping the mids out with this pickup cos you can't.
What can you expect from them? A real classic rock sound, with a full body and a great mid detail. The product description for these pickups is absolutely bang on.