No it's not so black and white and we have many Cinderella wannabes that wear foot corsets or foot aprons on this forum.We don't have to adopt the feminim habit of buying pretty heels that doesn't fit.
Right, because you can fit great in both size 11 and size 11.5 in length. Or maybe you are just closer to size 11.5 in length and you didn't know it. Or your feet were grown to fit multiple sizes great at the same time.
I only know bestetti gives you trial shoes to take home. The bigger shops like JLSJ, JLP, Berluti, and the UK firms either don't do trial shoes or uses semi finished shoes for trial. Not until recently did G&G make trial shoes.
But they do remake finished shoes if something is to be improved.