Hey all - just to say that I have yet to bite the bullet and have my passport reissued with the 'OR' conjunction. I am yet to be convinced that this is going to solve my problems but I am desperate for anyone who has done this. I have no idea how the machine-readable strip is displayed in such cases, and unless you get one of these passports, there is no way to find out in advance.
I don't know if there is any other forum that I could go to, in order to tap into Greeks with a similar problem. In other countries (the UK for example) dual names are handled by way of an endorsement at the bottom, leaving the primary name fields as they were, and then adding a note saying that 'the holder is also known as X', which is a logical way of doing it. I wish the same was the case with Greek ID documents, but it's not...