Update: the porter I brewed with brown sugar for priming turned out pretty well. The brown sugar shows just a hint at the end and isn't over-powering by any means. However, the beer feels (to me, though my wife disagrees) slightly over-carbonated. Not sure if this is related to using brown sugar vs. white sugar as the recipe called for.
Future Brews: Black RyePA, Smoked Garlic Porter(?)
Primary: Black Bear Brown Ale
Bottled: Brown Sugar Porter