I was already able to host onion services last year by using the crate directly. A few footguns related to flushing but it generally works as expected. I will however say that the code quality could be improved though. When trying to contribute, I found a lot of somewhat bad practices such as having direct file read/writes littered around without abstraction which made refactoring difficult (trying to add different storage/cache options such as in-memory only or encrypted)