I installed a set of these in my Am Std PBass last week. I've had a chance to play at a couple of jams and a rehearsal and have to say I'm sold. Practicing at home, they sound great but really come alive in a band situations.
Normally, I lean towards more vintage style pickups in a PBass but I love what these pickups can do. The bottom is nice and full without being boom. Jamming with some new guys the other day, I was amazed at how well it mated with the drummer's kick. The mids and upper mids are where they shine. Great note articulation when with the tone control up - nails that 70s Paul Jackson Headhunters vibe - and smoothes out nicely when you roll back the control.
One of the great things about PBass is how fast and easy it is to swap out pickups. I'm still learning about everything these pickups can do but trying 3 other options, this one's a keeper.
Also, David is an awesome guy. He lives nearby so we meet and talked music and pickups for awhile. Great guy, understands what goes into making great pickups. Highly recommended.