I know that this comes down to a matter of preference: some people prefer to have all their tools separated (a separate text editor, a separate compiler, a separate browser, a separate version-control app, etc.), while others prefer an integrated IDE. I belong to the IDE team, and would much rather have the git functionality built into Textastic - even if it were a 'plugin' or 'add-on' optional that I'd have to pay extra for. No problem there.

I know about Working Copy on iOS, so it's obvious that the code base already exists - and I'd love to see that integrated directly into Textastic.