Plus if you take advantage of this switch to get email at your own domain, switching providers in the future will be much easier.

One thing that ProtonMail really needs is automatic detection of calendar events in emails and creation of calendar events. It is a real blocker to have to manually create calendar entries. When they release a new iOS app that supports their calendar, if they support automatic calendar entries then I will likely switch back.

The other big win with Workplaces is Cloud Search, which is also a big time saver, but I could reluctantly live without that.

I'm a fairly new user and I feel the same way. For me the product would be much better if they would put more effort in the email client itself and keep these addons in the background (development-wise).

Still, I like the fact that I'm paying for the product and that Google is not reading those emails.