I use vaultwarden for business related secrets or where customer data come into play. For my private stuff I still use Chrome sync but also want to switch to vaultwarden.
What came to my mind: By January, a lot of people will (hopefully) switch from Chromium sourced browsers to Firefox because of the manifest v3 implementation. Because I don't want to trust Mozilla nor Google, I tinker with the thought to host my own FFsync (Firefox Sync) server to be more independend with my "cloud" hosted data. Had to think about the risks because hosting something like vaultwarden might be safe but I was unsure if FFsync gets the same care.