salam alikom
in fact, yes because nowadays appearance are very important than any thing else ..any palce you go they give a great attention to you if you look well dressed , im talking with experience, either when i was studying or at work now they give so much attention to people who are like this regardless of their background ,mentality or level of education
frankly speaking, if you want to contact any responsible in any administration or a boss and you don"t seem well dressed they didn't allow you even to enter to the reception setting....
But in my point of view i do agree with you sister hijab_al3efah appearance are most of the time deceiving, so me too i can't judge people from there appearance now matter what happens...there is a perverb in arabic that is said :لباسك يرفعك قبل جلوسك،وعلمك يرفعك بعد جلوسك i will try to translate it into English : if you were in meetings of work or sth else....your dress give a great value before you sit , and after that your konwledge give you the greatest value after you sit.. i hope it is well understood....
when i choosed my husband i didn't care about his appearance or other things ..but his background , principles..and what is more important his lmane....
salam alikom