Pete,
Would you like me to post an entity of names of succesful people who DO wear a shirt ant tie,
what a stupid assuption!! because a few dont does not mean to say that they all dont.
and many a worker wears a shirt an tie for exactly the reasons already mentioned, to name just a few, delivery drivers, bus drivers, lorry drivers........ yes lorry drivers look at any major supermarket chain,or large organisation and the majority of its workers wear a shirt and tie. Why because its smart, it gives the right image instead of that cant be bothered , I sling any thing on attitude attitude.
in other words old fashioned principles and standards are still what the custy likes to see. dress accordingly, you want higher prices, show them your standards, you want price seekers, go dressed in jeans and a t shirt.
If you get my drift
Geoff