Nope, this is the theory but in Android you will not be allowed to use anything else because even with IMAP you will need to go through oauth some times. Also,

Nope, this is the theory but in Android you will not be allowed to use anything else because even with IMAP you will need to go through oauth some times. Also, Google is regularly messing with the IMAP support. Like blocking their own server IPs as suspicious...