Well he does have a doom/sludge band called Space Bong that is in hiatus due to someone moving interstate or something like that, so maybe he bought them for that. I've never asked. He just seems happy to have them. He only mentioned them when I told him about my BKPs. He has a grindcore band as well but all three of his bands seem to currently falling apart at the seams ...
I'm in contact with a few people on Facebook who are either endorsees or have band members who are endorsees, generally from grindcore bands. The grindcore people tend to use the Drop & Gain model although there was another one they used before that came out. People from Repulsion, Phobia, and Cretin all use Lace pickups. Matt from Repulsion even has a special one made with his band logo on it:
