There is certainly nothing wrong with setting standards for particular circumstances. Someone on another board once compared language use to choice of shoes. If you are interviewing for a job as a senior executive and you're wearing a pair of dirty work boots you're probably not going to get the job. On the other hand, if you're looking for a job on an off shore oil rig and you're wearing a pair of $600 Guccis you're not going to do very well, either.