I've seen inner city coffee shops have great success with beer/wine as they attract a different crowd than more suburban ones.I think part of the success of beer/wine will depend on the locations themselves. If the shop is in a downtown center that has restaurants and nightlife then it'll be an easy extension, but if its in a strip mall on a back country route it may not have the success. Perhaps in the end they will decide that only some locations have the potential to really do beer/wine sales with any real numbers.
Cheers,
Mike Roy
Brewer
Franklin's Restaurant,Brewery & General Store
Hyattsville,MD
Franklinsbrewery.com
@franklinsbrwry
facebook.com/franklinsbrewery
Franklinsbrewery.blogspot.com