I have tried to like them, partially because they are so expensive, but the Greco LP with RY doesn't sound anything like my Gibson LP with the Abraxas.....obviously. They are very low gain pups, actually lower output than my Mule set in the Bacchus LP. They are very crunchy, but have the modern-ness in the upper digits, which is just not me. It's Vintage all the way for me from now on.
I haven't played with the pup height yet, but the low gain and RY voicing is just not for me.