Maybe not necessarily a win, but I switched my Tuta to Proton since we agreed with my friend to use Proton Duo, now we have the entire proton suite at our disposal and pay for it yearly. 
I’ve actually migrated my domain there, Though being a former tuta user means I have to keep my tuta account for any old emails perhaps since tuta wont obviously allow importing those emails (they dont have IMAP/SMTP support after all). Might even take advantage of the 1tb of proton drive we have at our disposal, currently the 1tb drive is split 50/50 (so each has 500GB) but it’s nice that we can allocate at our disposal where necessary. Will try to also take advantage of calendar. Proton VPN I’ve been doing that for a while so yeah.
It seems that I realized that my friend uses authy instead of a alternative that is more secure and private which in this case is ente auth. The pain in the butt is how uncooperative Authy is for allowing users to migrate so I’ll be in the process of switching him to Ente when he gets at my house. But I guess in practice he did turn on 2FA on his proton account so that’s a win in my book but yeah will make sure they use ente auth for 2FA.
Edit: Moved my calendars easily, Events were not supported ad expected so I’ll still need to be kept a backup, other than that the events I needed have been imported.