Google has released a native Gmail app for the iPhone and iPad (free, universal).
Gee, maybe I can install a separate app for every email account I have. Gotta catch ’em all!
I’ll stick with Mail’s unified inbox, even if it means I can’t spend time fiddling with tags, categories and priority inbox instead of replying to email.
[Update] Google has pulled the app, citing “…a bug which broke notifications and caused users to see an error message when first opening the app.”