Will ATV Flash (Black) conflict with existing jailbreak with XBMC?

I’m thinking of getting ATV Flash (Black) for my jailbroken ATV2. I already have XBMC installed and set up/customised to my requirements. If I installed ATV Flash (Black) what would happen to my current ATV2 setup? E.g. would my XBMC installation get wiped, or could it cause problems?

The Firecore software should be quite happy to co-exist alongside XBMC.  In fact XBMC is one of the 3rd party add-ons that are installable via the FireCore Maintenance menu.