Can Jira use DVCS and fisheye simutaneously to connect to GitHub?

[ClaireWolfe]

Hello,

Our instance of Jira allows projects that have GitHub repositories to hook up their project to GitHub via fisheye.  We create a repo in fisheye that links to the repo in GitHub and then the Jira user can include the key to an issue, so that they can see commits, etc. in their issues in Jira.

We now have a user who wants to hook up their GitHub repo to Jira using DVCS. They want to be able to see pull requests in additions to what fisheye shows them.

My question is can we create a DVCS in Jira that links this user's GitHub repo directly, while still allowing all other users to continue using fisheye?  

Our GitHub repos are set up so that they all branch from a common company directory.  If we were able to set up DVCS from that directory, won't all the repos under that directory be accessible via DVCS and will that cause conflicts with the fisheye repos that are out there?

Thank you for any help you can provide to help me understand how this works.