It appears I have some additional reading to do. After I posted about how much I enjoyed Robert Shea's All Things Are Lights, Eric Wagner posted in the comments that he enjoyed it, but he liked Shike even more. So it seems I ought to try Shike and see what he means.
I have plenty of options for reading Shike. Shea is out of print in the dead trees sense, but his work is available electronically in multiple formats. Shike is available as a Kindle edition for $8 but also has a free HTML on the official Shea site.
I read All Things Are Lights by converting the HTML version into a QiOO mobile file and then toting it around on my cell phone.