My thoughts are that it will make a dry, crisp tasting beer with slightly higher alcohol content. Anyone every try Champagne yeast in a low alcohol beer? Any thoughts on how this might come out?
The idea that champagne yeast is higher attenuative than something like US-05 is a total misnomer. If anything, wine yeast is less adept at fermenting a maltose wort than a good ale yeast. Champagne yeast is good at tolerating higher alc. percentages, but it is not a super yeast. It won't eat more sugars than US-05 and can't chew on unfermentable dextrines any more than US-05 - maybe less.
It took me a long time to understand this - I tried to dry many a beer out with Champagne yeast with ZERO effects, several times.
Re: You unusually high FG for a blonde. Did you transfer the beer before it was finished fermenting? Or had it stalled when you transferred? Did you use a lot of crystal malt? Was this an extract brew? If you transferred early adding more yeast may help drive a few more points - I'd recommend pitching an active starter.