This title says it all: I have this pickup in the neck of a Les Paul guitar, and the tone is just so sweet! But it's much different than your typical PAF:
this EJ Custom has a bright, clear, cutting tone almost like a vintage single coil, which gives your guitar some of the best cleans I've ever heard.
It's not Gretsch, but it's definitely not far from that tone.
The distorted tone isn't creamy like typical PAFs perhaps, but it's still way cool in a completely different way, I think