I tried that for a couple days and couldn't stand the interface. It was also buggy as hell and didn't properly index my emails.
I'm just so so so used to the stock mailbox app at this point that I can't use anything else.
The gmail app blows monster dick, too. It doesn't preload emails and thus forces me to refresh my inbox every time I get an email. Frustrating as hell.
Edit: apparently you can pay google 5 bucks a month to become a business user, upon which they'll turn on exchange support for you, but I don't know if any regular Joe Schmoe can subscribe because it asks you questions on your business and shit.
I'm at the point of ditching my oldddddd gmail account and using an iCloud email.
Stupid google blew it with this move. They tried to force people to use their shit. Too bad their shit sucks. Now I'm tentatively going to abandon the entire google ecosystem.