Denny knows that yeast better than anyone as it's his favorite.
My experience with this yeast has been good. I find that is not the most attenuative ale yeast (relatively speaking), therefore it renders some good mouthfeel to the finished beer. This also depends on your mash schedule and yeast health. I think Denny would agree with this but...I can't speak for him.
As far as terminal gravity goes...I like to use the airlock activity, final gravity, and clarity of the beer as my indicators for determining the timing of the fermentation.