Mailchimp sub-blog different list

Hi

The mailchimp-newsletter-integration plugin enables all sub-blogs to signup to 1 form globally.

If i just want 1 sub-blog to be able to signup to a different mailchimp newsletter, how can i achieve this?

1. Install the mailchimp plugin from wordpress just on that sub-blog? will it overide your plugin?
2. Will this feature be available in future with your plugin
3. Or must i disable and just use the mailchimp plugin from wordpress on every sub-blog?

Thanks