I think the pace of the stories and their scope is too... stunted. I actually wish we had more Chronicles downloads, to both have room for the characters, and the stories, breathe.
I mean, both books together don't describe nearly enough characters, certainly not in a manner that allows to paint their personalities in more than the broadest strokes (2 paragraphs, honestly, and very "broad").
The books, on the same token, describe what, a period of roughly 1 month, 5 weeks, together? It feels a bit weird, as after I finished reading the first book's fluff I felt we were just beginning - and not the journey in the world, but the first chapter of the book. The events are too compressed, with not enough happening. Compare Zelazny to any of the modern "opus writers" (Jordan, Martin, etc.), he had a lot more plot in a lot less pages.
Also, the "Gorgon" makes me very curious, and I'm a bit peeved at how little was actually discussed as per the above, but it feels the leit-motifs may be a bit too strong.
Both appearances are tied to jewels, both have snake relations (the serpent, and the snake-hair manifestation), and both are tied to Resurrectionist women.
I won't be surprised if this is not coincidental, but it still feels a bit heavy-handed, considering the amount of room it does and does not receive.
I like the world, and I like the stand-alone stories that let it and the characters breathe a bit more, more.