Everything about Keybase FS is experimental, I guess. This password manager says:

> Note: This is still a work in process. Use it with caution.

Meanwhile, Keybase FS says:

> At the time of this document, there are very few people using this system. We're just getting started testing. Note that we could, hypothetically, lose your data at any time. Or push a bug that makes you throw away your private keys. Ugh, burn.

I don't know if everyone is just overly cautious when it comes to declaring crypto stuff stable, but stability is a requirement of products like this for me. I wish these tools were audited more.