This isn't really about Linux password manager, it's more about password managers in general. It seems like everyone is going for "cloud storage" of my passwords. This is nuts. I know they "claim" they are fully encrypted and they don't have access to the passwords, but why should I trust them? These passwords are my life. It's crazy that this has become standard practice in the password manager world.
I use 1Password version 6, because after that they went subscription with MY passwords stored in the cloud with a "promise" that they couldn't decrypt them. I can't get (or find where to get) 1password 6 for Linux.
I might opt for one of the command line managers. I loose browser extensions, but honestly, those are probably way more insecure then cloud storage.