YES! I'm doing this! I wanted to be part of Europe Central but I was just daunted by the size and difficulty, especially since I'm currently in the middle of two other chunky novels.
So far (~10 pp. in), the prose is interesting, but I haven't really got a feel for where it's going.
Wikipedia page for Renata Adler:
http://en.wikipedia.org/wiki/Renata_A...
Feel free to use this thread to ask questions and post links to resources for Renata Adler and Speedboat.