Upload & Sell: Off
Flash brackets are from the days where iso 400 was your limit before grain got crazy so flash was used a lot to get more light meaning red-eye and the portrait orientation flash shadow were an issue. These days with good high iso bouncing flash and blending it with ambient is possible and more widely used along with frequent off camera use due to cheap radio triggers. Bracket or not, on-camera flash looks like on camera flash.
I have not had red eye in a single wedding photo of the 100,000+ I have shot, and never used bracket yet used plenty of on camera flash.
Bounce it smart and there are no issue.