Another brew v. wine standoff

Vince Winkel of the Daily Camera reports on May 1, 2015 that winery Ste. Michelle Wine Estates has sued Twisted Pine Brewing Company for trademark infringement over its use of Northstar Imperial Porter based on its Northstar wine brand.  A copy of the federal complaint is available here.  Although unlikely to go to trial, this is a good example of the increase in litigation between breweries and wineries.  Do you think a consumer is likely to be  confused between Northstar Imperial Porter and Northstar wine?