Judas Grail is a nice story, with some nice characters, but it has a few parts that needs some editing, like the Dweller and that stuff. And in the end the enemies are too powerful for most character groups.
In my opinion it is a quite OK adventure, even though it goes in quite deep in the cosmology. But then is that a bad thing? I like it, but it needs some editing.
I have never ran a bought adventure that I haven't edited to my personal liking. In the Black Madonna i simply didn't play about 10 pages because I didn't like them.