Never had any beer with pb flavoring and really don't feel like spending the $ to find out I don't like it.
But I'll suggest that this is not the way Prince B wished to be remembered
Had one a few years ago in Vermont.
I think it was OCB. Forget what brewery that is.
It was an alert whereas most PB's are stouts or Porters (making them fun choices for beer bread).
Beer tasted exactly what it would taste like if you took a spoonful of PB and chased it with a slug of beer. Definitely not something you could down a 6-pack of but it was a good representation of what it said it was.
Similar to me to Skewball whiskey. Definitely a novelty but I'll he damned if it doesn't taste like eating PB and shooting back a shot whiskey.