It’s still in its infancy and quite rough around the edges. The underlying data format for the index the configuration etc may all change before the first stable release, and given the time it takes to add code to migrate things to the newer format and the fact that it doesn’t have an active user base, it means a new alpha or beta version might break things.
On the upside, the tool can’t change your restic repository, the operations are read only, so worst thing that can happen is that you may need to re-index your restic repository again. I use it on a daily basis, but being the developer I know where the bodies are buried, so your experience will probably be different.
It’s been a bit quiet lately being distracted with other stuff, but I plan to get to at stable release eventually, one commit at a time. My life is in a restic repository now, so I’m heavily invested in swamp