The thing that caught my eye was the ability to download and run a dockerized version. This makes it pretty easy to get a self hosted option running, provided it does not rely on calling back to its original home.. wiznote.
I think i would lean towards something like next cloud as it is open source and has a very active development community.
That being said, I am extremely reluctant myself as well. Just wanted to put an update here to document the changes/development.