I think they are same kind of pickups in The Edge's Explorer -- one of his first guitars, and the one he still goes back to for those early sounds. Adam Clayton said words to the effect "Nothing else sounds like that thing..."
Have them in my '66 ES-335. Excellent sounding pickups, maybe my favorite humbuckers so far. Smooth and hot sounding, yet they are clear and well-defined at the same time. Most other HBs I try out are higher output, don't work as well for me.
I put one in the bridge of a mystery, nice, set neck early seventies V I repaired and refinished (green) and bigsbyfied.
It seemed an appropriate hommage, given the age of the instrument, and it was relitively cheap at the time ($120 CDN, probably about $85 US at the time)
it is quite low output compared to the 500T that I was more used to in my 90's V's, and in some respects that's nice, but I always feel like I'm fighting with low output pickups, probably because I am more used to something hotter.
I think I've heard better low output pickups. I like the new Classic 57's that are showig up on some contemporary instruments. Also, I have an early 81 Dot 335 and recently aquired a 81 Moderne, both of which are reputed to be equiped with shawbuckers...these are good sounding pickups, and I believe they are not terribly hot sounding. I don't notice that as much.