Every segment of the trading floor community was affected by the move to electronic trading and that includes vendors such as trading jacket manufacturer PECO who reinvented their company from focusing on custom trading jackets to a create custom chef wear line entitled Culinary Classics. Very inspiration news story below of how the reinvention happened and nice to see they were able to just as many traders have in other manners.
One note is that at 0:34 in the video you'll notice that some clerks have their jacket pulled over their nose which is one way to help mask the smell of someone's fart. You really had to spend a lot of time on the floor to understand how frequent that occurred.