so I can stop arguing this with the "wrong" people.
Sadly, I've never found any. Which seems odd as it might be fertile ground for a doctorate.
I have lots of anecdotal experience that suggests that the right style (BSD) is best though. Some of this is from teaching programming and helping students understand their programs. Often, simply fixing brace placement/reindenting gives them the insight they need to fix their programs.
Some of it is from code statement nesting errors I've either found and fixed or helped find with someone (pair debugging) who uses the wrong style (to pick a name to differentiate it from the "right" style).
I think a worthwhile experiment would be to take a bunch of source code and either double or remove braces arbitrarily, present them to developers and time how long it takes them to spot the error.