I used to have a Marshallhead Mk. II in the bridge slot of my Bernie. It sounded absolutely spectacular, but it was a bit lower output than I usually prefer and occasionally got microphonic under high gain. (IIRC, Wolfetones aren't potted unless you specifically ask for it, and I bought mine off the shelf.) Eventually it came out and a Suhr Doug Alrich went in its place. Anyway, if you're looking for a slightly overwound PAF tone and don't use more than classic rock gain levels, it's a great choice.