A friend of mine has Lace Nitro Hemis in his Greco Flying V and is always raving about them. He plays in grindcore and powerviolence bands here.
I know quite a few people in the American grindcore scene who have Lace pickups in their guitars, mainly the 'Drop & Gain' pickups, and are Lace endorsers, from bands like Repulsion, Phobia, and Cretin. They all seem to be pretty happy with them.
I have an Epi Explorer with the BKP A-Pig set in it but I haven't A/B'ed it with my mate's V.