I really like the way NoteSelf handles many wikis in one file. I just wrote in the GG about my problem with a lot of wikis on a Raspberry with limited memory and that it gets stuck after so many Node instances (https://groups.google.com/forum/#!topic/tiddlywiki/xWpNnABLYbQ). As I do not feel comfortable uploading my data to Cloudant (or any other third party) I tried to setup my own CouchDB. However this does not work for me, I am not able to login when NoteSelf prompts me to, it always returns a XMLHTTPError - even when I try to login as an admin. So maybe you could drop a few lines about what to look out for if one decides to setup a local instance.
Thank you anyways for this great peace of software :)