@davidfor: Hmm, good point on the fact that the Kobo driver uses nickel's db to do the on-device check, I'd forgotten about that because I tend to actually do the import in between usbms sessions

. (e.g,. I sync ko read status to the nickel db, so keeping it in sync is part of the work flow. Might not do it right after loading the books, but it'll happen eventually ;p).
@Uncle Robin: Yeah, doing a cursory pass over the wiki to make it slightly less depressing keeps getting pushed back down the TODO list, unfortunately...