I bit the bullet a few weeks ago and bought a Murena GS6 phone running e/OS
I can report that it has been better than expected in particular all the banking services here in Sweden, BankID, Swish etc work fine.
There have only been a few instances of things not working. Foremost amongst them is iRobot so I can't remotely control the cleaning robot any more and connected devices have been a pain (I suspect this is my fault).
So along with swapping off of gmail I think the only Google thing I use is YouTube.