Yes that seems quite nice (if you want to go that far). It also works well with the Dropbox (and others) sync engine because it encrypts individual files as opposed to making a large sparse bundle/volume file.
Don’t think it allows you to take advantage of delta-byte syncing though because while compression algorithms can now cater for the rsync-like delta sync functionality you find in some cloud storage clients my guess is that wouldn’t be optimal for secure encryption (but I don’t know it’s just a guess) - but if you aren’t changing the files a lot the speed degradation may be outweighed by your desired outcome.
It also works well for Dropbox shared folders in case you have the need to share folders with other people but still want this additional layer of encryption.
And of course since it’s open source it may make you feel more comfortable about the encryption.
...that said though, I actually do want to say that personally I'm always very conscious of what the tradeoff is.. I like to keep my files in a flexible format that's future proof and to be able to move it around and manipulate them in a fast way. The risk with something like Cryptomator, despite it looking pretty neat and being open source etc, that if people decide to not maintain it anymore then my files are stuck in an encrypted format that one would have to develop code (or use an old OS with an old version of Cryptomator) to access them.. so I'd prefer leaving my files in Dropbox (who encrypts my files on their/our side) and on full-disk encrypted hard drives instead. But each to their own of course!
Don’t think it allows you to take advantage of delta-byte syncing though because while compression algorithms can now cater for the rsync-like delta sync functionality you find in some cloud storage clients my guess is that wouldn’t be optimal for secure encryption (but I don’t know it’s just a guess) - but if you aren’t changing the files a lot the speed degradation may be outweighed by your desired outcome.
It also works well for Dropbox shared folders in case you have the need to share folders with other people but still want this additional layer of encryption.
And of course since it’s open source it may make you feel more comfortable about the encryption.