Regarding the employment situation it would depend on the employers dress standards,the work function that you would be performing,Most Westernised countries now have certain politically correct dress codes not only for safety but also for hygiene reasons,also basic uniform for particular job roles,which in Japan helps to recognise that person as a fellow employee also function that they are performing to general public.

I am sure every father or mother would have to ask on the parents inspection,educational standard hair tattoos or personal grooming or even sexual orientation,would I like this person to date my Daughter or Son,in almost every culture the answer would be the same a resounding NO,
Metal-heads or not there is a very large difference when joining an extended family in a marriage situation,under normal situations without culture clash this can be most difficult,let alone a multi-cultural relationship.