About the same. I pretty much xp all the time in Ruined City and we had one drop so far in about 3 levels of xp. Very rare drop it seems, but then it is from a trash mob.
I have done all of levels 66 to 70 at the "Hut" and have killed many, many of these guys. In 4 levels I have seen Earring of Ethical Uncertainty drop one time.
They partially slow and can be crippled, an easy fight for any group. Often drop Dragorn Greatblade which I beleive you get something like 23pp for.