I'll chime in here, as I've been using the B&R 20" Widebody recently. It worked fine for two nights in Los Angeles and (separately) four nights in Lima. It'll probably seem even roomier once I gain proficiency in some of the packing techniques I've seen mentioned on this forum.

As for its utility as a carryon, it fit easily in the overhead compartments of a 738, 757 and 763 (all on AA in F or C), but I couldn't make it work in Y on a UA 763. (Fortunately, there was closet space available.)

I also used it as one of our checked bags for a family trip to the Caribbean last month. By the way, does anyone know the best way to remove caked-on infant formula from the inside of a suitcase? Just curious.