I get irritated by "dress codes". Y right OK if it is a formal thing, I dig out my kilt etc and find my Skean Dhu if anyone wants to argue about it - but that's as far as I'm going, you can get peed off with convention.
I know a man (TT) who is an international character with multi million interests. He went in early one morning to look at a company he owned, and was taken by the cleaning supervisor as a "temp" - and given some work to do.
He spent an hour emptying bins, and picking up intelligence about the people running the business. Then, soon after, he sold the lot to some Germans, and went off to run a viable business, with some cherry-picked workers migrating to the new company. The original set-up was eventually folded by the Germans, after they had eaten quite a lot of carp (spelling was never my strong point) supplied by the merchants (is that a euphemism?) who were supposed to be directing the UK business.
TT knows what makes money, and he doesn't look "poor" - he does look like Joe Public. He is still in business ...
Clothes Do Not Always Make The Gentleman - they can make a good disguise.
Get me an orange tabard, and I might tell you something interesting, later ...