I bought a black Ralph Lauren wool overcoat. It is more of a car coat/town coat I guess as it is not full length. This coat has no buttons on the sleeves. The full length coats had buttons on their sleeves. Is there a rule or something to where short coats don't get buttons. I need to take it to the tailor and have the sleeves shortened. I am thinking about having buttons added. Would you think a coat was strange looking without buttons on the sleeves? Thanks for any advice.