I’m purchasing a number of made to fit dress shirts and saw an option to have 2 buttons instead of 1 neck button on a wide spread shirt. While I’ve read Alan Flusser’s Style & The Man, I haven’t seen anything referencing this.

How would this affect the presentation of the shirt? Would it make it more formal, casual, over the top, lacking style etc?

Here are 3 pictures that illustrate it:

http://4.bp.blogspot.com/_7gmscB9QAcc/SmHtRJRcIeI/AAAAAAAAAEE/Wum3mD1H81U/s320/MS-HU7005m.jpg

http://www.debonairmag.com/wp-content/uploads/2009/09/Collar-Double.jpg

http://manolomen.com/images/Putins%20collar.jpg