I'm using it Infomaniak, including their KDrive as a Dropbox replacement (with 2TB of data). I've even used their video conferencing app. No complaints so far. All seems to work just fine.
Interesting, files on demand is something I'm missing a lot. I'm on BSD though :'( I'll check if it can be made to work (full support is too much to ask I'm sure but perhaps a port can be made).
