Pocket watch chains

[Tarheel]

I have no photo, but I do have a thought. I feel the t-bar should go through the button hole from the front even if the button is also through the opening. The t-bar will be behind the fabric and the button on the opposite side. In the second photo (chain up higher on the vest) the button and t-bar seem to compete for the same space. One might loose a button that way.

If the t-bar were elaborate, scrolled and showy, I could see displaying it on the outside of the vest.