"clinical" might be a good way to put it, though they aren't as "bad" as the Schaller or Carvin / Kiesel pickups, which are almost sterile. That's not always a bad thing, but if you want to rock and get some snarl, they are not the best choice. I love the '59s and the JB pickups, but when I want an old school raunchy rock sound, I grab my H158 with Seth Lovers. I also like the 57 Classic and Classic + set in my SG.