Any reason for me to switch from Bitwarden?
So if you are happy with your setup, stick with it and no need to move to Proton pass. Maybe keep an eye and check back after few months if their offerings have changed or upgraded that is worth the effort and shifting trust.
I personally would sign up as first year is free/cheap and I like proton products, although somewhat buggy they are trustworthy and worth supporting. And I am using KeePass as my password manager which is cumbersome to selfhost and manage. I am not giving up on using KeePass yet as I too will wait to see where Proton pass ends up being.