I have experience with both Swineshead and Bare Knuckle.
One of my friends has a Swineshead Condor in the neck position on one of his guitars, very Peter Green-sounding, nice pickup. He had a coilsplit on it as well but it's not a very high output pickup so in single coil mode it was quite weak and thin.
I myself have a Bare Knuckle Riffraff in the bridge of my SG, which is a FANTASTIC pickup, really aggressive for a vintage-style humbucker, although I plan on swapping both that and the Lace gold/gold Dually pickup in the neck out soon for a matched pair of Bare Knuckle Holydivers because I needs moar output.
Either one is a viable option in my eyes, although it depends entirely on what you're after.