I do have a few concerns. The grip profile makes me think that shooting it would be equivalent to chopping wood with a full-tang axe without a handle. But then again, there are so many experts out there that state that you don't notice the recoil during a violent encounter. I guess that's why so many cops are practical sharpshooters with .40 S&W on the street.
Also, I really think that they could have made the extra effort and produced a double-barrel version. Maybe Heizer Defense is avoiding a litigious conflict with Double Tap Defense.