Why was Moses dressed up as a Mitsri when the daughters of Yisro found him and according to some midrash he had left Egypt 50 or more years previously? Being Jewish it is unlikely he spoke like a Mitsri. Since the Torah stresses this fact there must be some reason for it apart from him being an Egyptian prince and since he was running away from pharaoh after having a death sentence, he most likely lost that 'position'.
And why did the Jewish people on leaving Egypt specially want the 'smolos' the Egyptian clothes which Rashi says they even preferred to the gold and silver? In Egypt they never wore them as it says they never changed their names speech or clothes. They most likely wore Egyptian linen even in Egypt only their fashion styles were different. So why change their 'fashion' on leaving Egypt?